function getQueryVariable(query, variable) {

    var vars = query.split("&");
    for (var i=0;i<vars.length;i++) {
        var pair = vars[i].split("=");
        if (pair[0] == variable) {
            return pair[1];
        }
    }
    return '';
}

function getQueryString() {
    
    output = '';
    query = document.location.href;
    
    if (query.length > 0) {
        queryIndex = query.indexOf("?");
        if (queryIndex > -1) {
            output = '?' + query.substring(queryIndex + 1);
        }
    }

    return output;
}

function getQueryVariable_v2(variable) {
  var output = '';
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
      output = pair[1];
    }
  }
  
  return output; 
}

function printpage() {

	var output;
	query = document.location.href;
    if (query.length > 0) {
        queryIndex = query.indexOf("?");
        if (queryIndex > -1) {
            output = "&print=1";
        }
        else {
	        output = "?print=1";
        }
    }
    else {
    	output = "?print=1";
    }
    
    query = query + output;
    
    popUp(query, 960, 480);
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
	if(selObj.options[selObj.selectedIndex].value == "null") {
		return;
	}
	eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
	if (restore) selObj.selectedIndex=0;
}

function breakout_of_frame()
{
  if (top.location != location) {
    top.location.href = document.location.href ;
  }
}

function popUp(URL, w_width, w_height) {
	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=1,scrollbars=1,location=1,statusbar=0,menubar=1,resizable=1,width="+w_width+",height="+w_height+",left = 240,top = 212');");
}

function popUpBorderless(URL, w_width, w_height) {
	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,status=0,menubar=0,resizable=0,width="+w_width+",height="+w_height+",left = 240,top = 212');");
}

function print_r(obj, div_id) {
    
    var output = "";

    for (i in obj) {
        output += i + ": "+ obj[i] +"<br />";
    }
    
    var logging = document.getElementById(div_id);
    logging.innerHTML = output;

}

function disable_span_button(element_id) {
    element = document.getElementById(element_id);
    element.disabled = true;
    element.onclick="";
    element.innerHTML="<span>Sending...</span>";
}

function disable_button(element_id) {
    element = document.getElementById(element_id);
    element.type='button';
    element.onclick = "return false;";
    element.value="Sending...";
}

/*
Copyright (c) 2009, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.8.0r4
*/
if(typeof YAHOO=="undefined"||!YAHOO){var YAHOO={};}YAHOO.namespace=function(){var A=arguments,E=null,C,B,D;for(C=0;C<A.length;C=C+1){D=(""+A[C]).split(".");E=YAHOO;for(B=(D[0]=="YAHOO")?1:0;B<D.length;B=B+1){E[D[B]]=E[D[B]]||{};E=E[D[B]];}}return E;};YAHOO.log=function(D,A,C){var B=YAHOO.widget.Logger;if(B&&B.log){return B.log(D,A,C);}else{return false;}};YAHOO.register=function(A,E,D){var I=YAHOO.env.modules,B,H,G,F,C;if(!I[A]){I[A]={versions:[],builds:[]};}B=I[A];H=D.version;G=D.build;F=YAHOO.env.listeners;B.name=A;B.version=H;B.build=G;B.versions.push(H);B.builds.push(G);B.mainClass=E;for(C=0;C<F.length;C=C+1){F[C](B);}if(E){E.VERSION=H;E.BUILD=G;}else{YAHOO.log("mainClass is undefined for module "+A,"warn");}};YAHOO.env=YAHOO.env||{modules:[],listeners:[]};YAHOO.env.getVersion=function(A){return YAHOO.env.modules[A]||null;};YAHOO.env.ua=function(){var D=function(H){var I=0;return parseFloat(H.replace(/\./g,function(){return(I++==1)?"":".";}));},G=navigator,F={ie:0,opera:0,gecko:0,webkit:0,mobile:null,air:0,caja:G.cajaVersion,secure:false,os:null},C=navigator&&navigator.userAgent,E=window&&window.location,B=E&&E.href,A;F.secure=B&&(B.toLowerCase().indexOf("https")===0);if(C){if((/windows|win32/i).test(C)){F.os="windows";}else{if((/macintosh/i).test(C)){F.os="macintosh";}}if((/KHTML/).test(C)){F.webkit=1;}A=C.match(/AppleWebKit\/([^\s]*)/);if(A&&A[1]){F.webkit=D(A[1]);if(/ Mobile\//.test(C)){F.mobile="Apple";}else{A=C.match(/NokiaN[^\/]*/);if(A){F.mobile=A[0];}}A=C.match(/AdobeAIR\/([^\s]*)/);if(A){F.air=A[0];}}if(!F.webkit){A=C.match(/Opera[\s\/]([^\s]*)/);if(A&&A[1]){F.opera=D(A[1]);A=C.match(/Opera Mini[^;]*/);if(A){F.mobile=A[0];}}else{A=C.match(/MSIE\s([^;]*)/);if(A&&A[1]){F.ie=D(A[1]);}else{A=C.match(/Gecko\/([^\s]*)/);if(A){F.gecko=1;A=C.match(/rv:([^\s\)]*)/);if(A&&A[1]){F.gecko=D(A[1]);}}}}}}return F;}();(function(){YAHOO.namespace("util","widget","example");if("undefined"!==typeof YAHOO_config){var B=YAHOO_config.listener,A=YAHOO.env.listeners,D=true,C;if(B){for(C=0;C<A.length;C++){if(A[C]==B){D=false;break;}}if(D){A.push(B);}}}})();YAHOO.lang=YAHOO.lang||{};(function(){var B=YAHOO.lang,A=Object.prototype,H="[object Array]",C="[object Function]",G="[object Object]",E=[],F=["toString","valueOf"],D={isArray:function(I){return A.toString.apply(I)===H;},isBoolean:function(I){return typeof I==="boolean";},isFunction:function(I){return(typeof I==="function")||A.toString.apply(I)===C;},isNull:function(I){return I===null;},isNumber:function(I){return typeof I==="number"&&isFinite(I);},isObject:function(I){return(I&&(typeof I==="object"||B.isFunction(I)))||false;},isString:function(I){return typeof I==="string";},isUndefined:function(I){return typeof I==="undefined";},_IEEnumFix:(YAHOO.env.ua.ie)?function(K,J){var I,M,L;for(I=0;I<F.length;I=I+1){M=F[I];L=J[M];if(B.isFunction(L)&&L!=A[M]){K[M]=L;}}}:function(){},extend:function(L,M,K){if(!M||!L){throw new Error("extend failed, please check that "+"all dependencies are included.");}var J=function(){},I;J.prototype=M.prototype;L.prototype=new J();L.prototype.constructor=L;L.superclass=M.prototype;if(M.prototype.constructor==A.constructor){M.prototype.constructor=M;}if(K){for(I in K){if(B.hasOwnProperty(K,I)){L.prototype[I]=K[I];}}B._IEEnumFix(L.prototype,K);}},augmentObject:function(M,L){if(!L||!M){throw new Error("Absorb failed, verify dependencies.");}var I=arguments,K,N,J=I[2];if(J&&J!==true){for(K=2;K<I.length;K=K+1){M[I[K]]=L[I[K]];}}else{for(N in L){if(J||!(N in M)){M[N]=L[N];}}B._IEEnumFix(M,L);}},augmentProto:function(L,K){if(!K||!L){throw new Error("Augment failed, verify dependencies.");}var I=[L.prototype,K.prototype],J;for(J=2;J<arguments.length;J=J+1){I.push(arguments[J]);}B.augmentObject.apply(this,I);},dump:function(I,N){var K,M,P=[],Q="{...}",J="f(){...}",O=", ",L=" => ";if(!B.isObject(I)){return I+"";}else{if(I instanceof Date||("nodeType" in I&&"tagName" in I)){return I;}else{if(B.isFunction(I)){return J;}}}N=(B.isNumber(N))?N:3;if(B.isArray(I)){P.push("[");for(K=0,M=I.length;K<M;K=K+1){if(B.isObject(I[K])){P.push((N>0)?B.dump(I[K],N-1):Q);}else{P.push(I[K]);}P.push(O);}if(P.length>1){P.pop();}P.push("]");}else{P.push("{");for(K in I){if(B.hasOwnProperty(I,K)){P.push(K+L);if(B.isObject(I[K])){P.push((N>0)?B.dump(I[K],N-1):Q);}else{P.push(I[K]);}P.push(O);}}if(P.length>1){P.pop();}P.push("}");}return P.join("");},substitute:function(Y,J,R){var N,M,L,U,V,X,T=[],K,O="dump",S=" ",I="{",W="}",Q,P;for(;;){N=Y.lastIndexOf(I);if(N<0){break;}M=Y.indexOf(W,N);if(N+1>=M){break;}K=Y.substring(N+1,M);U=K;X=null;L=U.indexOf(S);if(L>-1){X=U.substring(L+1);U=U.substring(0,L);}V=J[U];if(R){V=R(U,V,X);}if(B.isObject(V)){if(B.isArray(V)){V=B.dump(V,parseInt(X,10));}else{X=X||"";Q=X.indexOf(O);if(Q>-1){X=X.substring(4);}P=V.toString();if(P===G||Q>-1){V=B.dump(V,parseInt(X,10));}else{V=P;}}}else{if(!B.isString(V)&&!B.isNumber(V)){V="~-"+T.length+"-~";T[T.length]=K;}}Y=Y.substring(0,N)+V+Y.substring(M+1);}for(N=T.length-1;N>=0;N=N-1){Y=Y.replace(new RegExp("~-"+N+"-~"),"{"+T[N]+"}","g");}return Y;},trim:function(I){try{return I.replace(/^\s+|\s+$/g,"");}catch(J){return I;}},merge:function(){var L={},J=arguments,I=J.length,K;for(K=0;K<I;K=K+1){B.augmentObject(L,J[K],true);}return L;},later:function(P,J,Q,L,M){P=P||0;J=J||{};var K=Q,O=L,N,I;if(B.isString(Q)){K=J[Q];}if(!K){throw new TypeError("method undefined");}if(O&&!B.isArray(O)){O=[L];}N=function(){K.apply(J,O||E);};I=(M)?setInterval(N,P):setTimeout(N,P);return{interval:M,cancel:function(){if(this.interval){clearInterval(I);}else{clearTimeout(I);}}};},isValue:function(I){return(B.isObject(I)||B.isString(I)||B.isNumber(I)||B.isBoolean(I));}};B.hasOwnProperty=(A.hasOwnProperty)?function(I,J){return I&&I.hasOwnProperty(J);}:function(I,J){return !B.isUndefined(I[J])&&I.constructor.prototype[J]!==I[J];};D.augmentObject(B,D,true);YAHOO.util.Lang=B;B.augment=B.augmentProto;YAHOO.augment=B.augmentProto;YAHOO.extend=B.extend;})();YAHOO.register("yahoo",YAHOO,{version:"2.8.0r4",build:"2449"});


/*
Copyright (c) 2009, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.8.0r4
*/
YAHOO.util.CustomEvent=function(D,C,B,A,E){this.type=D;this.scope=C||window;this.silent=B;this.fireOnce=E;this.fired=false;this.firedWith=null;this.signature=A||YAHOO.util.CustomEvent.LIST;this.subscribers=[];if(!this.silent){}var F="_YUICEOnSubscribe";if(D!==F){this.subscribeEvent=new YAHOO.util.CustomEvent(F,this,true);}this.lastError=null;};YAHOO.util.CustomEvent.LIST=0;YAHOO.util.CustomEvent.FLAT=1;YAHOO.util.CustomEvent.prototype={subscribe:function(B,C,D){if(!B){throw new Error("Invalid callback for subscriber to '"+this.type+"'");}if(this.subscribeEvent){this.subscribeEvent.fire(B,C,D);}var A=new YAHOO.util.Subscriber(B,C,D);if(this.fireOnce&&this.fired){this.notify(A,this.firedWith);}else{this.subscribers.push(A);}},unsubscribe:function(D,F){if(!D){return this.unsubscribeAll();}var E=false;for(var B=0,A=this.subscribers.length;B<A;++B){var C=this.subscribers[B];if(C&&C.contains(D,F)){this._delete(B);E=true;}}return E;},fire:function(){this.lastError=null;var H=[],A=this.subscribers.length;var D=[].slice.call(arguments,0),C=true,F,B=false;if(this.fireOnce){if(this.fired){return true;}else{this.firedWith=D;}}this.fired=true;if(!A&&this.silent){return true;}if(!this.silent){}var E=this.subscribers.slice();for(F=0;F<A;++F){var G=E[F];if(!G){B=true;}else{C=this.notify(G,D);if(false===C){if(!this.silent){}break;}}}return(C!==false);},notify:function(F,C){var B,H=null,E=F.getScope(this.scope),A=YAHOO.util.Event.throwErrors;if(!this.silent){}if(this.signature==YAHOO.util.CustomEvent.FLAT){if(C.length>0){H=C[0];}try{B=F.fn.call(E,H,F.obj);}catch(G){this.lastError=G;if(A){throw G;}}}else{try{B=F.fn.call(E,this.type,C,F.obj);}catch(D){this.lastError=D;if(A){throw D;}}}return B;},unsubscribeAll:function(){var A=this.subscribers.length,B;for(B=A-1;B>-1;B--){this._delete(B);}this.subscribers=[];return A;},_delete:function(A){var B=this.subscribers[A];if(B){delete B.fn;delete B.obj;}this.subscribers.splice(A,1);},toString:function(){return"CustomEvent: "+"'"+this.type+"', "+"context: "+this.scope;}};YAHOO.util.Subscriber=function(A,B,C){this.fn=A;this.obj=YAHOO.lang.isUndefined(B)?null:B;this.overrideContext=C;};YAHOO.util.Subscriber.prototype.getScope=function(A){if(this.overrideContext){if(this.overrideContext===true){return this.obj;}else{return this.overrideContext;}}return A;};YAHOO.util.Subscriber.prototype.contains=function(A,B){if(B){return(this.fn==A&&this.obj==B);}else{return(this.fn==A);}};YAHOO.util.Subscriber.prototype.toString=function(){return"Subscriber { obj: "+this.obj+", overrideContext: "+(this.overrideContext||"no")+" }";};if(!YAHOO.util.Event){YAHOO.util.Event=function(){var G=false,H=[],J=[],A=0,E=[],B=0,C={63232:38,63233:40,63234:37,63235:39,63276:33,63277:34,25:9},D=YAHOO.env.ua.ie,F="focusin",I="focusout";return{POLL_RETRYS:500,POLL_INTERVAL:40,EL:0,TYPE:1,FN:2,WFN:3,UNLOAD_OBJ:3,ADJ_SCOPE:4,OBJ:5,OVERRIDE:6,CAPTURE:7,lastError:null,isSafari:YAHOO.env.ua.webkit,webkit:YAHOO.env.ua.webkit,isIE:D,_interval:null,_dri:null,_specialTypes:{focusin:(D?"focusin":"focus"),focusout:(D?"focusout":"blur")},DOMReady:false,throwErrors:false,startInterval:function(){if(!this._interval){this._interval=YAHOO.lang.later(this.POLL_INTERVAL,this,this._tryPreloadAttach,null,true);}},onAvailable:function(Q,M,O,P,N){var K=(YAHOO.lang.isString(Q))?[Q]:Q;for(var L=0;L<K.length;L=L+1){E.push({id:K[L],fn:M,obj:O,overrideContext:P,checkReady:N});}A=this.POLL_RETRYS;this.startInterval();},onContentReady:function(N,K,L,M){this.onAvailable(N,K,L,M,true);},onDOMReady:function(){this.DOMReadyEvent.subscribe.apply(this.DOMReadyEvent,arguments);},_addListener:function(M,K,V,P,T,Y){if(!V||!V.call){return false;}if(this._isValidCollection(M)){var W=true;for(var Q=0,S=M.length;Q<S;++Q){W=this.on(M[Q],K,V,P,T)&&W;}return W;}else{if(YAHOO.lang.isString(M)){var O=this.getEl(M);if(O){M=O;}else{this.onAvailable(M,function(){YAHOO.util.Event._addListener(M,K,V,P,T,Y);});return true;}}}if(!M){return false;}if("unload"==K&&P!==this){J[J.length]=[M,K,V,P,T];return true;}var L=M;if(T){if(T===true){L=P;}else{L=T;}}var N=function(Z){return V.call(L,YAHOO.util.Event.getEvent(Z,M),P);};var X=[M,K,V,N,L,P,T,Y];var R=H.length;H[R]=X;try{this._simpleAdd(M,K,N,Y);}catch(U){this.lastError=U;this.removeListener(M,K,V);return false;}return true;},_getType:function(K){return this._specialTypes[K]||K;},addListener:function(M,P,L,N,O){var K=((P==F||P==I)&&!YAHOO.env.ua.ie)?true:false;return this._addListener(M,this._getType(P),L,N,O,K);},addFocusListener:function(L,K,M,N){return this.on(L,F,K,M,N);},removeFocusListener:function(L,K){return this.removeListener(L,F,K);},addBlurListener:function(L,K,M,N){return this.on(L,I,K,M,N);},removeBlurListener:function(L,K){return this.removeListener(L,I,K);},removeListener:function(L,K,R){var M,P,U;K=this._getType(K);if(typeof L=="string"){L=this.getEl(L);}else{if(this._isValidCollection(L)){var S=true;for(M=L.length-1;M>-1;M--){S=(this.removeListener(L[M],K,R)&&S);}return S;}}if(!R||!R.call){return this.purgeElement(L,false,K);}if("unload"==K){for(M=J.length-1;M>-1;M--){U=J[M];if(U&&U[0]==L&&U[1]==K&&U[2]==R){J.splice(M,1);return true;}}return false;}var N=null;var O=arguments[3];if("undefined"===typeof O){O=this._getCacheIndex(H,L,K,R);}if(O>=0){N=H[O];}if(!L||!N){return false;}var T=N[this.CAPTURE]===true?true:false;try{this._simpleRemove(L,K,N[this.WFN],T);}catch(Q){this.lastError=Q;return false;}delete H[O][this.WFN];delete H[O][this.FN];H.splice(O,1);return true;},getTarget:function(M,L){var K=M.target||M.srcElement;return this.resolveTextNode(K);},resolveTextNode:function(L){try{if(L&&3==L.nodeType){return L.parentNode;}}catch(K){}return L;},getPageX:function(L){var K=L.pageX;if(!K&&0!==K){K=L.clientX||0;if(this.isIE){K+=this._getScrollLeft();}}return K;},getPageY:function(K){var L=K.pageY;if(!L&&0!==L){L=K.clientY||0;if(this.isIE){L+=this._getScrollTop();}}return L;},getXY:function(K){return[this.getPageX(K),this.getPageY(K)];},getRelatedTarget:function(L){var K=L.relatedTarget;if(!K){if(L.type=="mouseout"){K=L.toElement;
}else{if(L.type=="mouseover"){K=L.fromElement;}}}return this.resolveTextNode(K);},getTime:function(M){if(!M.time){var L=new Date().getTime();try{M.time=L;}catch(K){this.lastError=K;return L;}}return M.time;},stopEvent:function(K){this.stopPropagation(K);this.preventDefault(K);},stopPropagation:function(K){if(K.stopPropagation){K.stopPropagation();}else{K.cancelBubble=true;}},preventDefault:function(K){if(K.preventDefault){K.preventDefault();}else{K.returnValue=false;}},getEvent:function(M,K){var L=M||window.event;if(!L){var N=this.getEvent.caller;while(N){L=N.arguments[0];if(L&&Event==L.constructor){break;}N=N.caller;}}return L;},getCharCode:function(L){var K=L.keyCode||L.charCode||0;if(YAHOO.env.ua.webkit&&(K in C)){K=C[K];}return K;},_getCacheIndex:function(M,P,Q,O){for(var N=0,L=M.length;N<L;N=N+1){var K=M[N];if(K&&K[this.FN]==O&&K[this.EL]==P&&K[this.TYPE]==Q){return N;}}return -1;},generateId:function(K){var L=K.id;if(!L){L="yuievtautoid-"+B;++B;K.id=L;}return L;},_isValidCollection:function(L){try{return(L&&typeof L!=="string"&&L.length&&!L.tagName&&!L.alert&&typeof L[0]!=="undefined");}catch(K){return false;}},elCache:{},getEl:function(K){return(typeof K==="string")?document.getElementById(K):K;},clearCache:function(){},DOMReadyEvent:new YAHOO.util.CustomEvent("DOMReady",YAHOO,0,0,1),_load:function(L){if(!G){G=true;var K=YAHOO.util.Event;K._ready();K._tryPreloadAttach();}},_ready:function(L){var K=YAHOO.util.Event;if(!K.DOMReady){K.DOMReady=true;K.DOMReadyEvent.fire();K._simpleRemove(document,"DOMContentLoaded",K._ready);}},_tryPreloadAttach:function(){if(E.length===0){A=0;if(this._interval){this._interval.cancel();this._interval=null;}return;}if(this.locked){return;}if(this.isIE){if(!this.DOMReady){this.startInterval();return;}}this.locked=true;var Q=!G;if(!Q){Q=(A>0&&E.length>0);}var P=[];var R=function(T,U){var S=T;if(U.overrideContext){if(U.overrideContext===true){S=U.obj;}else{S=U.overrideContext;}}U.fn.call(S,U.obj);};var L,K,O,N,M=[];for(L=0,K=E.length;L<K;L=L+1){O=E[L];if(O){N=this.getEl(O.id);if(N){if(O.checkReady){if(G||N.nextSibling||!Q){M.push(O);E[L]=null;}}else{R(N,O);E[L]=null;}}else{P.push(O);}}}for(L=0,K=M.length;L<K;L=L+1){O=M[L];R(this.getEl(O.id),O);}A--;if(Q){for(L=E.length-1;L>-1;L--){O=E[L];if(!O||!O.id){E.splice(L,1);}}this.startInterval();}else{if(this._interval){this._interval.cancel();this._interval=null;}}this.locked=false;},purgeElement:function(O,P,R){var M=(YAHOO.lang.isString(O))?this.getEl(O):O;var Q=this.getListeners(M,R),N,K;if(Q){for(N=Q.length-1;N>-1;N--){var L=Q[N];this.removeListener(M,L.type,L.fn);}}if(P&&M&&M.childNodes){for(N=0,K=M.childNodes.length;N<K;++N){this.purgeElement(M.childNodes[N],P,R);}}},getListeners:function(M,K){var P=[],L;if(!K){L=[H,J];}else{if(K==="unload"){L=[J];}else{K=this._getType(K);L=[H];}}var R=(YAHOO.lang.isString(M))?this.getEl(M):M;for(var O=0;O<L.length;O=O+1){var T=L[O];if(T){for(var Q=0,S=T.length;Q<S;++Q){var N=T[Q];if(N&&N[this.EL]===R&&(!K||K===N[this.TYPE])){P.push({type:N[this.TYPE],fn:N[this.FN],obj:N[this.OBJ],adjust:N[this.OVERRIDE],scope:N[this.ADJ_SCOPE],index:Q});}}}}return(P.length)?P:null;},_unload:function(R){var L=YAHOO.util.Event,O,N,M,Q,P,S=J.slice(),K;for(O=0,Q=J.length;O<Q;++O){M=S[O];if(M){K=window;if(M[L.ADJ_SCOPE]){if(M[L.ADJ_SCOPE]===true){K=M[L.UNLOAD_OBJ];}else{K=M[L.ADJ_SCOPE];}}M[L.FN].call(K,L.getEvent(R,M[L.EL]),M[L.UNLOAD_OBJ]);S[O]=null;}}M=null;K=null;J=null;if(H){for(N=H.length-1;N>-1;N--){M=H[N];if(M){L.removeListener(M[L.EL],M[L.TYPE],M[L.FN],N);}}M=null;}L._simpleRemove(window,"unload",L._unload);},_getScrollLeft:function(){return this._getScroll()[1];},_getScrollTop:function(){return this._getScroll()[0];},_getScroll:function(){var K=document.documentElement,L=document.body;if(K&&(K.scrollTop||K.scrollLeft)){return[K.scrollTop,K.scrollLeft];}else{if(L){return[L.scrollTop,L.scrollLeft];}else{return[0,0];}}},regCE:function(){},_simpleAdd:function(){if(window.addEventListener){return function(M,N,L,K){M.addEventListener(N,L,(K));};}else{if(window.attachEvent){return function(M,N,L,K){M.attachEvent("on"+N,L);};}else{return function(){};}}}(),_simpleRemove:function(){if(window.removeEventListener){return function(M,N,L,K){M.removeEventListener(N,L,(K));};}else{if(window.detachEvent){return function(L,M,K){L.detachEvent("on"+M,K);};}else{return function(){};}}}()};}();(function(){var EU=YAHOO.util.Event;EU.on=EU.addListener;EU.onFocus=EU.addFocusListener;EU.onBlur=EU.addBlurListener;
/* DOMReady: based on work by: Dean Edwards/John Resig/Matthias Miller/Diego Perini */
if(EU.isIE){if(self!==self.top){document.onreadystatechange=function(){if(document.readyState=="complete"){document.onreadystatechange=null;EU._ready();}};}else{YAHOO.util.Event.onDOMReady(YAHOO.util.Event._tryPreloadAttach,YAHOO.util.Event,true);var n=document.createElement("p");EU._dri=setInterval(function(){try{n.doScroll("left");clearInterval(EU._dri);EU._dri=null;EU._ready();n=null;}catch(ex){}},EU.POLL_INTERVAL);}}else{if(EU.webkit&&EU.webkit<525){EU._dri=setInterval(function(){var rs=document.readyState;if("loaded"==rs||"complete"==rs){clearInterval(EU._dri);EU._dri=null;EU._ready();}},EU.POLL_INTERVAL);}else{EU._simpleAdd(document,"DOMContentLoaded",EU._ready);}}EU._simpleAdd(window,"load",EU._load);EU._simpleAdd(window,"unload",EU._unload);EU._tryPreloadAttach();})();}YAHOO.util.EventProvider=function(){};YAHOO.util.EventProvider.prototype={__yui_events:null,__yui_subscribers:null,subscribe:function(A,C,F,E){this.__yui_events=this.__yui_events||{};var D=this.__yui_events[A];if(D){D.subscribe(C,F,E);}else{this.__yui_subscribers=this.__yui_subscribers||{};var B=this.__yui_subscribers;if(!B[A]){B[A]=[];}B[A].push({fn:C,obj:F,overrideContext:E});}},unsubscribe:function(C,E,G){this.__yui_events=this.__yui_events||{};var A=this.__yui_events;if(C){var F=A[C];if(F){return F.unsubscribe(E,G);}}else{var B=true;for(var D in A){if(YAHOO.lang.hasOwnProperty(A,D)){B=B&&A[D].unsubscribe(E,G);}}return B;}return false;},unsubscribeAll:function(A){return this.unsubscribe(A);
},createEvent:function(B,G){this.__yui_events=this.__yui_events||{};var E=G||{},D=this.__yui_events,F;if(D[B]){}else{F=new YAHOO.util.CustomEvent(B,E.scope||this,E.silent,YAHOO.util.CustomEvent.FLAT,E.fireOnce);D[B]=F;if(E.onSubscribeCallback){F.subscribeEvent.subscribe(E.onSubscribeCallback);}this.__yui_subscribers=this.__yui_subscribers||{};var A=this.__yui_subscribers[B];if(A){for(var C=0;C<A.length;++C){F.subscribe(A[C].fn,A[C].obj,A[C].overrideContext);}}}return D[B];},fireEvent:function(B){this.__yui_events=this.__yui_events||{};var D=this.__yui_events[B];if(!D){return null;}var A=[];for(var C=1;C<arguments.length;++C){A.push(arguments[C]);}return D.fire.apply(D,A);},hasEvent:function(A){if(this.__yui_events){if(this.__yui_events[A]){return true;}}return false;}};(function(){var A=YAHOO.util.Event,C=YAHOO.lang;YAHOO.util.KeyListener=function(D,I,E,F){if(!D){}else{if(!I){}else{if(!E){}}}if(!F){F=YAHOO.util.KeyListener.KEYDOWN;}var G=new YAHOO.util.CustomEvent("keyPressed");this.enabledEvent=new YAHOO.util.CustomEvent("enabled");this.disabledEvent=new YAHOO.util.CustomEvent("disabled");if(C.isString(D)){D=document.getElementById(D);}if(C.isFunction(E)){G.subscribe(E);}else{G.subscribe(E.fn,E.scope,E.correctScope);}function H(O,N){if(!I.shift){I.shift=false;}if(!I.alt){I.alt=false;}if(!I.ctrl){I.ctrl=false;}if(O.shiftKey==I.shift&&O.altKey==I.alt&&O.ctrlKey==I.ctrl){var J,M=I.keys,L;if(YAHOO.lang.isArray(M)){for(var K=0;K<M.length;K++){J=M[K];L=A.getCharCode(O);if(J==L){G.fire(L,O);break;}}}else{L=A.getCharCode(O);if(M==L){G.fire(L,O);}}}}this.enable=function(){if(!this.enabled){A.on(D,F,H);this.enabledEvent.fire(I);}this.enabled=true;};this.disable=function(){if(this.enabled){A.removeListener(D,F,H);this.disabledEvent.fire(I);}this.enabled=false;};this.toString=function(){return"KeyListener ["+I.keys+"] "+D.tagName+(D.id?"["+D.id+"]":"");};};var B=YAHOO.util.KeyListener;B.KEYDOWN="keydown";B.KEYUP="keyup";B.KEY={ALT:18,BACK_SPACE:8,CAPS_LOCK:20,CONTROL:17,DELETE:46,DOWN:40,END:35,ENTER:13,ESCAPE:27,HOME:36,LEFT:37,META:224,NUM_LOCK:144,PAGE_DOWN:34,PAGE_UP:33,PAUSE:19,PRINTSCREEN:44,RIGHT:39,SCROLL_LOCK:145,SHIFT:16,SPACE:32,TAB:9,UP:38};})();YAHOO.register("event",YAHOO.util.Event,{version:"2.8.0r4",build:"2449"});

/*
Copyright (c) 2009, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.8.0r4
*/
if(typeof YAHOO=="undefined"||!YAHOO){var YAHOO={};}YAHOO.namespace=function(){var A=arguments,E=null,C,B,D;for(C=0;C<A.length;C=C+1){D=(""+A[C]).split(".");E=YAHOO;for(B=(D[0]=="YAHOO")?1:0;B<D.length;B=B+1){E[D[B]]=E[D[B]]||{};E=E[D[B]];}}return E;};YAHOO.log=function(D,A,C){var B=YAHOO.widget.Logger;if(B&&B.log){return B.log(D,A,C);}else{return false;}};YAHOO.register=function(A,E,D){var I=YAHOO.env.modules,B,H,G,F,C;if(!I[A]){I[A]={versions:[],builds:[]};}B=I[A];H=D.version;G=D.build;F=YAHOO.env.listeners;B.name=A;B.version=H;B.build=G;B.versions.push(H);B.builds.push(G);B.mainClass=E;for(C=0;C<F.length;C=C+1){F[C](B);}if(E){E.VERSION=H;E.BUILD=G;}else{YAHOO.log("mainClass is undefined for module "+A,"warn");}};YAHOO.env=YAHOO.env||{modules:[],listeners:[]};YAHOO.env.getVersion=function(A){return YAHOO.env.modules[A]||null;};YAHOO.env.ua=function(){var D=function(H){var I=0;return parseFloat(H.replace(/\./g,function(){return(I++==1)?"":".";}));},G=navigator,F={ie:0,opera:0,gecko:0,webkit:0,mobile:null,air:0,caja:G.cajaVersion,secure:false,os:null},C=navigator&&navigator.userAgent,E=window&&window.location,B=E&&E.href,A;F.secure=B&&(B.toLowerCase().indexOf("https")===0);if(C){if((/windows|win32/i).test(C)){F.os="windows";}else{if((/macintosh/i).test(C)){F.os="macintosh";}}if((/KHTML/).test(C)){F.webkit=1;}A=C.match(/AppleWebKit\/([^\s]*)/);if(A&&A[1]){F.webkit=D(A[1]);if(/ Mobile\//.test(C)){F.mobile="Apple";}else{A=C.match(/NokiaN[^\/]*/);if(A){F.mobile=A[0];}}A=C.match(/AdobeAIR\/([^\s]*)/);if(A){F.air=A[0];}}if(!F.webkit){A=C.match(/Opera[\s\/]([^\s]*)/);if(A&&A[1]){F.opera=D(A[1]);A=C.match(/Opera Mini[^;]*/);if(A){F.mobile=A[0];}}else{A=C.match(/MSIE\s([^;]*)/);if(A&&A[1]){F.ie=D(A[1]);}else{A=C.match(/Gecko\/([^\s]*)/);if(A){F.gecko=1;A=C.match(/rv:([^\s\)]*)/);if(A&&A[1]){F.gecko=D(A[1]);}}}}}}return F;}();(function(){YAHOO.namespace("util","widget","example");if("undefined"!==typeof YAHOO_config){var B=YAHOO_config.listener,A=YAHOO.env.listeners,D=true,C;if(B){for(C=0;C<A.length;C++){if(A[C]==B){D=false;break;}}if(D){A.push(B);}}}})();YAHOO.lang=YAHOO.lang||{};(function(){var B=YAHOO.lang,A=Object.prototype,H="[object Array]",C="[object Function]",G="[object Object]",E=[],F=["toString","valueOf"],D={isArray:function(I){return A.toString.apply(I)===H;},isBoolean:function(I){return typeof I==="boolean";},isFunction:function(I){return(typeof I==="function")||A.toString.apply(I)===C;},isNull:function(I){return I===null;},isNumber:function(I){return typeof I==="number"&&isFinite(I);},isObject:function(I){return(I&&(typeof I==="object"||B.isFunction(I)))||false;},isString:function(I){return typeof I==="string";},isUndefined:function(I){return typeof I==="undefined";},_IEEnumFix:(YAHOO.env.ua.ie)?function(K,J){var I,M,L;for(I=0;I<F.length;I=I+1){M=F[I];L=J[M];if(B.isFunction(L)&&L!=A[M]){K[M]=L;}}}:function(){},extend:function(L,M,K){if(!M||!L){throw new Error("extend failed, please check that "+"all dependencies are included.");}var J=function(){},I;J.prototype=M.prototype;L.prototype=new J();L.prototype.constructor=L;L.superclass=M.prototype;if(M.prototype.constructor==A.constructor){M.prototype.constructor=M;}if(K){for(I in K){if(B.hasOwnProperty(K,I)){L.prototype[I]=K[I];}}B._IEEnumFix(L.prototype,K);}},augmentObject:function(M,L){if(!L||!M){throw new Error("Absorb failed, verify dependencies.");}var I=arguments,K,N,J=I[2];if(J&&J!==true){for(K=2;K<I.length;K=K+1){M[I[K]]=L[I[K]];}}else{for(N in L){if(J||!(N in M)){M[N]=L[N];}}B._IEEnumFix(M,L);}},augmentProto:function(L,K){if(!K||!L){throw new Error("Augment failed, verify dependencies.");}var I=[L.prototype,K.prototype],J;for(J=2;J<arguments.length;J=J+1){I.push(arguments[J]);}B.augmentObject.apply(this,I);},dump:function(I,N){var K,M,P=[],Q="{...}",J="f(){...}",O=", ",L=" => ";if(!B.isObject(I)){return I+"";}else{if(I instanceof Date||("nodeType" in I&&"tagName" in I)){return I;}else{if(B.isFunction(I)){return J;}}}N=(B.isNumber(N))?N:3;if(B.isArray(I)){P.push("[");for(K=0,M=I.length;K<M;K=K+1){if(B.isObject(I[K])){P.push((N>0)?B.dump(I[K],N-1):Q);}else{P.push(I[K]);}P.push(O);}if(P.length>1){P.pop();}P.push("]");}else{P.push("{");for(K in I){if(B.hasOwnProperty(I,K)){P.push(K+L);if(B.isObject(I[K])){P.push((N>0)?B.dump(I[K],N-1):Q);}else{P.push(I[K]);}P.push(O);}}if(P.length>1){P.pop();}P.push("}");}return P.join("");},substitute:function(Y,J,R){var N,M,L,U,V,X,T=[],K,O="dump",S=" ",I="{",W="}",Q,P;for(;;){N=Y.lastIndexOf(I);if(N<0){break;}M=Y.indexOf(W,N);if(N+1>=M){break;}K=Y.substring(N+1,M);U=K;X=null;L=U.indexOf(S);if(L>-1){X=U.substring(L+1);U=U.substring(0,L);}V=J[U];if(R){V=R(U,V,X);}if(B.isObject(V)){if(B.isArray(V)){V=B.dump(V,parseInt(X,10));}else{X=X||"";Q=X.indexOf(O);if(Q>-1){X=X.substring(4);}P=V.toString();if(P===G||Q>-1){V=B.dump(V,parseInt(X,10));}else{V=P;}}}else{if(!B.isString(V)&&!B.isNumber(V)){V="~-"+T.length+"-~";T[T.length]=K;}}Y=Y.substring(0,N)+V+Y.substring(M+1);}for(N=T.length-1;N>=0;N=N-1){Y=Y.replace(new RegExp("~-"+N+"-~"),"{"+T[N]+"}","g");}return Y;},trim:function(I){try{return I.replace(/^\s+|\s+$/g,"");}catch(J){return I;}},merge:function(){var L={},J=arguments,I=J.length,K;for(K=0;K<I;K=K+1){B.augmentObject(L,J[K],true);}return L;},later:function(P,J,Q,L,M){P=P||0;J=J||{};var K=Q,O=L,N,I;if(B.isString(Q)){K=J[Q];}if(!K){throw new TypeError("method 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C="toString",A=parseInt,B=RegExp,D=YAHOO.util;D.Dom.Color={KEYWORDS:{black:"000",silver:"c0c0c0",gray:"808080",white:"fff",maroon:"800000",red:"f00",purple:"800080",fuchsia:"f0f",green:"008000",lime:"0f0",olive:"808000",yellow:"ff0",navy:"000080",blue:"00f",teal:"008080",aqua:"0ff"},re_RGB:/^rgb\(([0-9]+)\s*,\s*([0-9]+)\s*,\s*([0-9]+)\)$/i,re_hex:/^#?([0-9A-F]{2})([0-9A-F]{2})([0-9A-F]{2})$/i,re_hex3:/([0-9A-F])/gi,toRGB:function(E){if(!D.Dom.Color.re_RGB.test(E)){E=D.Dom.Color.toHex(E);}if(D.Dom.Color.re_hex.exec(E)){E="rgb("+[A(B.$1,16),A(B.$2,16),A(B.$3,16)].join(", ")+")";}return E;},toHex:function(H){H=D.Dom.Color.KEYWORDS[H]||H;if(D.Dom.Color.re_RGB.exec(H)){var G=(B.$1.length===1)?"0"+B.$1:Number(B.$1),F=(B.$2.length===1)?"0"+B.$2:Number(B.$2),E=(B.$3.length===1)?"0"+B.$3:Number(B.$3);H=[G[C](16),F[C](16),E[C](16)].join("");}if(H.length<6){H=H.replace(D.Dom.Color.re_hex3,"$1$1");}if(H!=="transparent"&&H.indexOf("#")<0){H="#"+H;}return H.toLowerCase();}};}());YAHOO.register("dom",YAHOO.util.Dom,{version:"2.8.0r4",build:"2449"});YAHOO.util.CustomEvent=function(D,C,B,A,E){this.type=D;this.scope=C||window;this.silent=B;this.fireOnce=E;this.fired=false;this.firedWith=null;this.signature=A||YAHOO.util.CustomEvent.LIST;this.subscribers=[];if(!this.silent){}var F="_YUICEOnSubscribe";if(D!==F){this.subscribeEvent=new YAHOO.util.CustomEvent(F,this,true);}this.lastError=null;};YAHOO.util.CustomEvent.LIST=0;YAHOO.util.CustomEvent.FLAT=1;YAHOO.util.CustomEvent.prototype={subscribe:function(B,C,D){if(!B){throw new Error("Invalid callback for subscriber to '"+this.type+"'");}if(this.subscribeEvent){this.subscribeEvent.fire(B,C,D);}var A=new YAHOO.util.Subscriber(B,C,D);if(this.fireOnce&&this.fired){this.notify(A,this.firedWith);}else{this.subscribers.push(A);}},unsubscribe:function(D,F){if(!D){return this.unsubscribeAll();}var E=false;for(var B=0,A=this.subscribers.length;B<A;++B){var C=this.subscribers[B];if(C&&C.contains(D,F)){this._delete(B);E=true;}}return E;},fire:function(){this.lastError=null;var H=[],A=this.subscribers.length;var D=[].slice.call(arguments,0),C=true,F,B=false;if(this.fireOnce){if(this.fired){return true;}else{this.firedWith=D;}}this.fired=true;if(!A&&this.silent){return true;}if(!this.silent){}var E=this.subscribers.slice();for(F=0;F<A;++F){var G=E[F];if(!G){B=true;}else{C=this.notify(G,D);if(false===C){if(!this.silent){}break;}}}return(C!==false);},notify:function(F,C){var B,H=null,E=F.getScope(this.scope),A=YAHOO.util.Event.throwErrors;if(!this.silent){}if(this.signature==YAHOO.util.CustomEvent.FLAT){if(C.length>0){H=C[0];}try{B=F.fn.call(E,H,F.obj);}catch(G){this.lastError=G;if(A){throw G;}}}else{try{B=F.fn.call(E,this.type,C,F.obj);}catch(D){this.lastError=D;if(A){throw D;}}}return B;},unsubscribeAll:function(){var A=this.subscribers.length,B;for(B=A-1;B>-1;B--){this._delete(B);}this.subscribers=[];return A;},_delete:function(A){var B=this.subscribers[A];if(B){delete B.fn;delete B.obj;}this.subscribers.splice(A,1);},toString:function(){return"CustomEvent: "+"'"+this.type+"', "+"context: "+this.scope;}};YAHOO.util.Subscriber=function(A,B,C){this.fn=A;this.obj=YAHOO.lang.isUndefined(B)?null:B;this.overrideContext=C;};YAHOO.util.Subscriber.prototype.getScope=function(A){if(this.overrideContext){if(this.overrideContext===true){return this.obj;}else{return this.overrideContext;}}return A;};YAHOO.util.Subscriber.prototype.contains=function(A,B){if(B){return(this.fn==A&&this.obj==B);}else{return(this.fn==A);}};YAHOO.util.Subscriber.prototype.toString=function(){return"Subscriber { obj: "+this.obj+", overrideContext: "+(this.overrideContext||"no")+" }";};if(!YAHOO.util.Event){YAHOO.util.Event=function(){var G=false,H=[],J=[],A=0,E=[],B=0,C={63232:38,63233:40,63234:37,63235:39,63276:33,63277:34,25:9},D=YAHOO.env.ua.ie,F="focusin",I="focusout";return{POLL_RETRYS:500,POLL_INTERVAL:40,EL:0,TYPE:1,FN:2,WFN:3,UNLOAD_OBJ:3,ADJ_SCOPE:4,OBJ:5,OVERRIDE:6,CAPTURE:7,lastError:null,isSafari:YAHOO.env.ua.webkit,webkit:YAHOO.env.ua.webkit,isIE:D,_interval:null,_dri:null,_specialTypes:{focusin:(D?"focusin":"focus"),focusout:(D?"focusout":"blur")},DOMReady:false,throwErrors:false,startInterval:function(){if(!this._interval){this._interval=YAHOO.lang.later(this.POLL_INTERVAL,this,this._tryPreloadAttach,null,true);}},onAvailable:function(Q,M,O,P,N){var K=(YAHOO.lang.isString(Q))?[Q]:Q;for(var L=0;L<K.length;L=L+1){E.push({id:K[L],fn:M,obj:O,overrideContext:P,checkReady:N});}A=this.POLL_RETRYS;this.startInterval();},onContentReady:function(N,K,L,M){this.onAvailable(N,K,L,M,true);},onDOMReady:function(){this.DOMReadyEvent.subscribe.apply(this.DOMReadyEvent,arguments);},_addListener:function(M,K,V,P,T,Y){if(!V||!V.call){return false;}if(this._isValidCollection(M)){var W=true;for(var Q=0,S=M.length;Q<S;++Q){W=this.on(M[Q],K,V,P,T)&&W;}return W;}else{if(YAHOO.lang.isString(M)){var O=this.getEl(M);if(O){M=O;}else{this.onAvailable(M,function(){YAHOO.util.Event._addListener(M,K,V,P,T,Y);});return true;}}}if(!M){return false;}if("unload"==K&&P!==this){J[J.length]=[M,K,V,P,T];return true;}var L=M;if(T){if(T===true){L=P;}else{L=T;}}var N=function(Z){return V.call(L,YAHOO.util.Event.getEvent(Z,M),P);};var X=[M,K,V,N,L,P,T,Y];var R=H.length;H[R]=X;try{this._simpleAdd(M,K,N,Y);}catch(U){this.lastError=U;this.removeListener(M,K,V);return false;}return true;},_getType:function(K){return this._specialTypes[K]||K;},addListener:function(M,P,L,N,O){var K=((P==F||P==I)&&!YAHOO.env.ua.ie)?true:false;return this._addListener(M,this._getType(P),L,N,O,K);},addFocusListener:function(L,K,M,N){return this.on(L,F,K,M,N);},removeFocusListener:function(L,K){return this.removeListener(L,F,K);},addBlurListener:function(L,K,M,N){return this.on(L,I,K,M,N);},removeBlurListener:function(L,K){return this.removeListener(L,I,K);},removeListener:function(L,K,R){var M,P,U;K=this._getType(K);if(typeof L=="string"){L=this.getEl(L);}else{if(this._isValidCollection(L)){var S=true;for(M=L.length-1;M>-1;M--){S=(this.removeListener(L[M],K,R)&&S);}return S;}}if(!R||!R.call){return this.purgeElement(L,false,K);}if("unload"==K){for(M=J.length-1;M>-1;M--){U=J[M];if(U&&U[0]==L&&U[1]==K&&U[2]==R){J.splice(M,1);return true;}}return false;}var N=null;var O=arguments[3];if("undefined"===typeof O){O=this._getCacheIndex(H,L,K,R);}if(O>=0){N=H[O];}if(!L||!N){return false;}var T=N[this.CAPTURE]===true?true:false;try{this._simpleRemove(L,K,N[this.WFN],T);}catch(Q){this.lastError=Q;return false;}delete H[O][this.WFN];delete H[O][this.FN];H.splice(O,1);return true;},getTarget:function(M,L){var K=M.target||M.srcElement;return this.resolveTextNode(K);},resolveTextNode:function(L){try{if(L&&3==L.nodeType){return L.parentNode;}}catch(K){}return L;},getPageX:function(L){var K=L.pageX;if(!K&&0!==K){K=L.clientX||0;if(this.isIE){K+=this._getScrollLeft();}}return K;},getPageY:function(K){var L=K.pageY;if(!L&&0!==L){L=K.clientY||0;if(this.isIE){L+=this._getScrollTop();}}return L;},getXY:function(K){return[this.getPageX(K),this.getPageY(K)];},getRelatedTarget:function(L){var K=L.relatedTarget;if(!K){if(L.type=="mouseout"){K=L.toElement;
}else{if(L.type=="mouseover"){K=L.fromElement;}}}return this.resolveTextNode(K);},getTime:function(M){if(!M.time){var L=new Date().getTime();try{M.time=L;}catch(K){this.lastError=K;return L;}}return M.time;},stopEvent:function(K){this.stopPropagation(K);this.preventDefault(K);},stopPropagation:function(K){if(K.stopPropagation){K.stopPropagation();}else{K.cancelBubble=true;}},preventDefault:function(K){if(K.preventDefault){K.preventDefault();}else{K.returnValue=false;}},getEvent:function(M,K){var L=M||window.event;if(!L){var N=this.getEvent.caller;while(N){L=N.arguments[0];if(L&&Event==L.constructor){break;}N=N.caller;}}return L;},getCharCode:function(L){var K=L.keyCode||L.charCode||0;if(YAHOO.env.ua.webkit&&(K in C)){K=C[K];}return K;},_getCacheIndex:function(M,P,Q,O){for(var N=0,L=M.length;N<L;N=N+1){var K=M[N];if(K&&K[this.FN]==O&&K[this.EL]==P&&K[this.TYPE]==Q){return N;}}return -1;},generateId:function(K){var L=K.id;if(!L){L="yuievtautoid-"+B;++B;K.id=L;}return L;},_isValidCollection:function(L){try{return(L&&typeof L!=="string"&&L.length&&!L.tagName&&!L.alert&&typeof L[0]!=="undefined");}catch(K){return false;}},elCache:{},getEl:function(K){return(typeof K==="string")?document.getElementById(K):K;},clearCache:function(){},DOMReadyEvent:new YAHOO.util.CustomEvent("DOMReady",YAHOO,0,0,1),_load:function(L){if(!G){G=true;var K=YAHOO.util.Event;K._ready();K._tryPreloadAttach();}},_ready:function(L){var K=YAHOO.util.Event;if(!K.DOMReady){K.DOMReady=true;K.DOMReadyEvent.fire();K._simpleRemove(document,"DOMContentLoaded",K._ready);}},_tryPreloadAttach:function(){if(E.length===0){A=0;if(this._interval){this._interval.cancel();this._interval=null;}return;}if(this.locked){return;}if(this.isIE){if(!this.DOMReady){this.startInterval();return;}}this.locked=true;var Q=!G;if(!Q){Q=(A>0&&E.length>0);}var P=[];var R=function(T,U){var S=T;if(U.overrideContext){if(U.overrideContext===true){S=U.obj;}else{S=U.overrideContext;}}U.fn.call(S,U.obj);};var L,K,O,N,M=[];for(L=0,K=E.length;L<K;L=L+1){O=E[L];if(O){N=this.getEl(O.id);if(N){if(O.checkReady){if(G||N.nextSibling||!Q){M.push(O);E[L]=null;}}else{R(N,O);E[L]=null;}}else{P.push(O);}}}for(L=0,K=M.length;L<K;L=L+1){O=M[L];R(this.getEl(O.id),O);}A--;if(Q){for(L=E.length-1;L>-1;L--){O=E[L];if(!O||!O.id){E.splice(L,1);}}this.startInterval();}else{if(this._interval){this._interval.cancel();this._interval=null;}}this.locked=false;},purgeElement:function(O,P,R){var M=(YAHOO.lang.isString(O))?this.getEl(O):O;var Q=this.getListeners(M,R),N,K;if(Q){for(N=Q.length-1;N>-1;N--){var L=Q[N];this.removeListener(M,L.type,L.fn);}}if(P&&M&&M.childNodes){for(N=0,K=M.childNodes.length;N<K;++N){this.purgeElement(M.childNodes[N],P,R);}}},getListeners:function(M,K){var P=[],L;if(!K){L=[H,J];}else{if(K==="unload"){L=[J];}else{K=this._getType(K);L=[H];}}var R=(YAHOO.lang.isString(M))?this.getEl(M):M;for(var O=0;O<L.length;O=O+1){var T=L[O];if(T){for(var Q=0,S=T.length;Q<S;++Q){var N=T[Q];if(N&&N[this.EL]===R&&(!K||K===N[this.TYPE])){P.push({type:N[this.TYPE],fn:N[this.FN],obj:N[this.OBJ],adjust:N[this.OVERRIDE],scope:N[this.ADJ_SCOPE],index:Q});}}}}return(P.length)?P:null;},_unload:function(R){var L=YAHOO.util.Event,O,N,M,Q,P,S=J.slice(),K;for(O=0,Q=J.length;O<Q;++O){M=S[O];if(M){K=window;if(M[L.ADJ_SCOPE]){if(M[L.ADJ_SCOPE]===true){K=M[L.UNLOAD_OBJ];}else{K=M[L.ADJ_SCOPE];}}M[L.FN].call(K,L.getEvent(R,M[L.EL]),M[L.UNLOAD_OBJ]);S[O]=null;}}M=null;K=null;J=null;if(H){for(N=H.length-1;N>-1;N--){M=H[N];if(M){L.removeListener(M[L.EL],M[L.TYPE],M[L.FN],N);}}M=null;}L._simpleRemove(window,"unload",L._unload);},_getScrollLeft:function(){return this._getScroll()[1];},_getScrollTop:function(){return this._getScroll()[0];},_getScroll:function(){var K=document.documentElement,L=document.body;if(K&&(K.scrollTop||K.scrollLeft)){return[K.scrollTop,K.scrollLeft];}else{if(L){return[L.scrollTop,L.scrollLeft];}else{return[0,0];}}},regCE:function(){},_simpleAdd:function(){if(window.addEventListener){return function(M,N,L,K){M.addEventListener(N,L,(K));};}else{if(window.attachEvent){return function(M,N,L,K){M.attachEvent("on"+N,L);};}else{return function(){};}}}(),_simpleRemove:function(){if(window.removeEventListener){return function(M,N,L,K){M.removeEventListener(N,L,(K));};}else{if(window.detachEvent){return function(L,M,K){L.detachEvent("on"+M,K);};}else{return function(){};}}}()};}();(function(){var EU=YAHOO.util.Event;EU.on=EU.addListener;EU.onFocus=EU.addFocusListener;EU.onBlur=EU.addBlurListener;
/* DOMReady: based on work by: Dean Edwards/John Resig/Matthias Miller/Diego Perini */
if(EU.isIE){if(self!==self.top){document.onreadystatechange=function(){if(document.readyState=="complete"){document.onreadystatechange=null;EU._ready();}};}else{YAHOO.util.Event.onDOMReady(YAHOO.util.Event._tryPreloadAttach,YAHOO.util.Event,true);var n=document.createElement("p");EU._dri=setInterval(function(){try{n.doScroll("left");clearInterval(EU._dri);EU._dri=null;EU._ready();n=null;}catch(ex){}},EU.POLL_INTERVAL);}}else{if(EU.webkit&&EU.webkit<525){EU._dri=setInterval(function(){var rs=document.readyState;if("loaded"==rs||"complete"==rs){clearInterval(EU._dri);EU._dri=null;EU._ready();}},EU.POLL_INTERVAL);}else{EU._simpleAdd(document,"DOMContentLoaded",EU._ready);}}EU._simpleAdd(window,"load",EU._load);EU._simpleAdd(window,"unload",EU._unload);EU._tryPreloadAttach();})();}YAHOO.util.EventProvider=function(){};YAHOO.util.EventProvider.prototype={__yui_events:null,__yui_subscribers:null,subscribe:function(A,C,F,E){this.__yui_events=this.__yui_events||{};var D=this.__yui_events[A];if(D){D.subscribe(C,F,E);}else{this.__yui_subscribers=this.__yui_subscribers||{};var B=this.__yui_subscribers;if(!B[A]){B[A]=[];}B[A].push({fn:C,obj:F,overrideContext:E});}},unsubscribe:function(C,E,G){this.__yui_events=this.__yui_events||{};var A=this.__yui_events;if(C){var F=A[C];if(F){return F.unsubscribe(E,G);}}else{var B=true;for(var D in A){if(YAHOO.lang.hasOwnProperty(A,D)){B=B&&A[D].unsubscribe(E,G);}}return B;}return false;},unsubscribeAll:function(A){return this.unsubscribe(A);
},createEvent:function(B,G){this.__yui_events=this.__yui_events||{};var E=G||{},D=this.__yui_events,F;if(D[B]){}else{F=new YAHOO.util.CustomEvent(B,E.scope||this,E.silent,YAHOO.util.CustomEvent.FLAT,E.fireOnce);D[B]=F;if(E.onSubscribeCallback){F.subscribeEvent.subscribe(E.onSubscribeCallback);}this.__yui_subscribers=this.__yui_subscribers||{};var A=this.__yui_subscribers[B];if(A){for(var C=0;C<A.length;++C){F.subscribe(A[C].fn,A[C].obj,A[C].overrideContext);}}}return D[B];},fireEvent:function(B){this.__yui_events=this.__yui_events||{};var D=this.__yui_events[B];if(!D){return null;}var A=[];for(var C=1;C<arguments.length;++C){A.push(arguments[C]);}return D.fire.apply(D,A);},hasEvent:function(A){if(this.__yui_events){if(this.__yui_events[A]){return true;}}return false;}};(function(){var A=YAHOO.util.Event,C=YAHOO.lang;YAHOO.util.KeyListener=function(D,I,E,F){if(!D){}else{if(!I){}else{if(!E){}}}if(!F){F=YAHOO.util.KeyListener.KEYDOWN;}var G=new YAHOO.util.CustomEvent("keyPressed");this.enabledEvent=new YAHOO.util.CustomEvent("enabled");this.disabledEvent=new YAHOO.util.CustomEvent("disabled");if(C.isString(D)){D=document.getElementById(D);}if(C.isFunction(E)){G.subscribe(E);}else{G.subscribe(E.fn,E.scope,E.correctScope);}function H(O,N){if(!I.shift){I.shift=false;}if(!I.alt){I.alt=false;}if(!I.ctrl){I.ctrl=false;}if(O.shiftKey==I.shift&&O.altKey==I.alt&&O.ctrlKey==I.ctrl){var J,M=I.keys,L;if(YAHOO.lang.isArray(M)){for(var K=0;K<M.length;K++){J=M[K];L=A.getCharCode(O);if(J==L){G.fire(L,O);break;}}}else{L=A.getCharCode(O);if(M==L){G.fire(L,O);}}}}this.enable=function(){if(!this.enabled){A.on(D,F,H);this.enabledEvent.fire(I);}this.enabled=true;};this.disable=function(){if(this.enabled){A.removeListener(D,F,H);this.disabledEvent.fire(I);}this.enabled=false;};this.toString=function(){return"KeyListener ["+I.keys+"] "+D.tagName+(D.id?"["+D.id+"]":"");};};var B=YAHOO.util.KeyListener;B.KEYDOWN="keydown";B.KEYUP="keyup";B.KEY={ALT:18,BACK_SPACE:8,CAPS_LOCK:20,CONTROL:17,DELETE:46,DOWN:40,END:35,ENTER:13,ESCAPE:27,HOME:36,LEFT:37,META:224,NUM_LOCK:144,PAGE_DOWN:34,PAGE_UP:33,PAUSE:19,PRINTSCREEN:44,RIGHT:39,SCROLL_LOCK:145,SHIFT:16,SPACE:32,TAB:9,UP:38};})();YAHOO.register("event",YAHOO.util.Event,{version:"2.8.0r4",build:"2449"});YAHOO.register("yahoo-dom-event", YAHOO, {version: "2.8.0r4", build: "2449"});


/*
Copyright (c) 2009, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 2.8.0r4
*/
YAHOO.util.Connect={_msxml_progid:["Microsoft.XMLHTTP","MSXML2.XMLHTTP.3.0","MSXML2.XMLHTTP"],_http_headers:{},_has_http_headers:false,_use_default_post_header:true,_default_post_header:"application/x-www-form-urlencoded; charset=UTF-8",_default_form_header:"application/x-www-form-urlencoded",_use_default_xhr_header:true,_default_xhr_header:"XMLHttpRequest",_has_default_headers:true,_default_headers:{},_poll:{},_timeOut:{},_polling_interval:50,_transaction_id:0,startEvent:new YAHOO.util.CustomEvent("start"),completeEvent:new YAHOO.util.CustomEvent("complete"),successEvent:new YAHOO.util.CustomEvent("success"),failureEvent:new YAHOO.util.CustomEvent("failure"),abortEvent:new YAHOO.util.CustomEvent("abort"),_customEvents:{onStart:["startEvent","start"],onComplete:["completeEvent","complete"],onSuccess:["successEvent","success"],onFailure:["failureEvent","failure"],onUpload:["uploadEvent","upload"],onAbort:["abortEvent","abort"]},setProgId:function(A){this._msxml_progid.unshift(A);},setDefaultPostHeader:function(A){if(typeof A=="string"){this._default_post_header=A;}else{if(typeof A=="boolean"){this._use_default_post_header=A;}}},setDefaultXhrHeader:function(A){if(typeof A=="string"){this._default_xhr_header=A;}else{this._use_default_xhr_header=A;}},setPollingInterval:function(A){if(typeof A=="number"&&isFinite(A)){this._polling_interval=A;}},createXhrObject:function(F){var D,A,B;try{A=new XMLHttpRequest();D={conn:A,tId:F,xhr:true};}catch(C){for(B=0;B<this._msxml_progid.length;++B){try{A=new ActiveXObject(this._msxml_progid[B]);D={conn:A,tId:F,xhr:true};break;}catch(E){}}}finally{return D;}},getConnectionObject:function(A){var C,D=this._transaction_id;try{if(!A){C=this.createXhrObject(D);}else{C={tId:D};if(A==="xdr"){C.conn=this._transport;C.xdr=true;}else{if(A==="upload"){C.upload=true;}}}if(C){this._transaction_id++;}}catch(B){}return C;},asyncRequest:function(G,D,F,A){var E,C,B=(F&&F.argument)?F.argument:null;if(this._isFileUpload){C="upload";}else{if(F.xdr){C="xdr";}}E=this.getConnectionObject(C);if(!E){return null;}else{if(F&&F.customevents){this.initCustomEvents(E,F);}if(this._isFormSubmit){if(this._isFileUpload){this.uploadFile(E,F,D,A);return E;}if(G.toUpperCase()=="GET"){if(this._sFormData.length!==0){D+=((D.indexOf("?")==-1)?"?":"&")+this._sFormData;}}else{if(G.toUpperCase()=="POST"){A=A?this._sFormData+"&"+A:this._sFormData;}}}if(G.toUpperCase()=="GET"&&(F&&F.cache===false)){D+=((D.indexOf("?")==-1)?"?":"&")+"rnd="+new Date().valueOf().toString();}if(this._use_default_xhr_header){if(!this._default_headers["X-Requested-With"]){this.initHeader("X-Requested-With",this._default_xhr_header,true);}}if((G.toUpperCase()==="POST"&&this._use_default_post_header)&&this._isFormSubmit===false){this.initHeader("Content-Type",this._default_post_header);}if(E.xdr){this.xdr(E,G,D,F,A);return E;}E.conn.open(G,D,true);if(this._has_default_headers||this._has_http_headers){this.setHeader(E);}this.handleReadyState(E,F);E.conn.send(A||"");if(this._isFormSubmit===true){this.resetFormState();}this.startEvent.fire(E,B);if(E.startEvent){E.startEvent.fire(E,B);}return E;}},initCustomEvents:function(A,C){var B;for(B in C.customevents){if(this._customEvents[B][0]){A[this._customEvents[B][0]]=new YAHOO.util.CustomEvent(this._customEvents[B][1],(C.scope)?C.scope:null);A[this._customEvents[B][0]].subscribe(C.customevents[B]);}}},handleReadyState:function(C,D){var B=this,A=(D&&D.argument)?D.argument:null;if(D&&D.timeout){this._timeOut[C.tId]=window.setTimeout(function(){B.abort(C,D,true);},D.timeout);}this._poll[C.tId]=window.setInterval(function(){if(C.conn&&C.conn.readyState===4){window.clearInterval(B._poll[C.tId]);delete B._poll[C.tId];if(D&&D.timeout){window.clearTimeout(B._timeOut[C.tId]);delete B._timeOut[C.tId];}B.completeEvent.fire(C,A);if(C.completeEvent){C.completeEvent.fire(C,A);}B.handleTransactionResponse(C,D);}},this._polling_interval);},handleTransactionResponse:function(B,I,D){var E,A,G=(I&&I.argument)?I.argument:null,C=(B.r&&B.r.statusText==="xdr:success")?true:false,H=(B.r&&B.r.statusText==="xdr:failure")?true:false,J=D;try{if((B.conn.status!==undefined&&B.conn.status!==0)||C){E=B.conn.status;}else{if(H&&!J){E=0;}else{E=13030;}}}catch(F){E=13030;}if((E>=200&&E<300)||E===1223||C){A=B.xdr?B.r:this.createResponseObject(B,G);if(I&&I.success){if(!I.scope){I.success(A);}else{I.success.apply(I.scope,[A]);}}this.successEvent.fire(A);if(B.successEvent){B.successEvent.fire(A);}}else{switch(E){case 12002:case 12029:case 12030:case 12031:case 12152:case 13030:A=this.createExceptionObject(B.tId,G,(D?D:false));if(I&&I.failure){if(!I.scope){I.failure(A);}else{I.failure.apply(I.scope,[A]);}}break;default:A=(B.xdr)?B.response:this.createResponseObject(B,G);if(I&&I.failure){if(!I.scope){I.failure(A);}else{I.failure.apply(I.scope,[A]);}}}this.failureEvent.fire(A);if(B.failureEvent){B.failureEvent.fire(A);}}this.releaseObject(B);A=null;},createResponseObject:function(A,G){var D={},I={},E,C,F,B;try{C=A.conn.getAllResponseHeaders();F=C.split("\n");for(E=0;E<F.length;E++){B=F[E].indexOf(":");if(B!=-1){I[F[E].substring(0,B)]=YAHOO.lang.trim(F[E].substring(B+2));}}}catch(H){}D.tId=A.tId;D.status=(A.conn.status==1223)?204:A.conn.status;D.statusText=(A.conn.status==1223)?"No Content":A.conn.statusText;D.getResponseHeader=I;D.getAllResponseHeaders=C;D.responseText=A.conn.responseText;D.responseXML=A.conn.responseXML;if(G){D.argument=G;}return D;},createExceptionObject:function(H,D,A){var F=0,G="communication failure",C=-1,B="transaction aborted",E={};E.tId=H;if(A){E.status=C;E.statusText=B;}else{E.status=F;E.statusText=G;}if(D){E.argument=D;}return E;},initHeader:function(A,D,C){var B=(C)?this._default_headers:this._http_headers;B[A]=D;if(C){this._has_default_headers=true;}else{this._has_http_headers=true;}},setHeader:function(A){var B;if(this._has_default_headers){for(B in this._default_headers){if(YAHOO.lang.hasOwnProperty(this._default_headers,B)){A.conn.setRequestHeader(B,this._default_headers[B]);}}}if(this._has_http_headers){for(B in this._http_headers){if(YAHOO.lang.hasOwnProperty(this._http_headers,B)){A.conn.setRequestHeader(B,this._http_headers[B]);
}}this._http_headers={};this._has_http_headers=false;}},resetDefaultHeaders:function(){this._default_headers={};this._has_default_headers=false;},abort:function(E,G,A){var D,B=(G&&G.argument)?G.argument:null;E=E||{};if(E.conn){if(E.xhr){if(this.isCallInProgress(E)){E.conn.abort();window.clearInterval(this._poll[E.tId]);delete this._poll[E.tId];if(A){window.clearTimeout(this._timeOut[E.tId]);delete this._timeOut[E.tId];}D=true;}}else{if(E.xdr){E.conn.abort(E.tId);D=true;}}}else{if(E.upload){var C="yuiIO"+E.tId;var F=document.getElementById(C);if(F){YAHOO.util.Event.removeListener(F,"load");document.body.removeChild(F);if(A){window.clearTimeout(this._timeOut[E.tId]);delete this._timeOut[E.tId];}D=true;}}else{D=false;}}if(D===true){this.abortEvent.fire(E,B);if(E.abortEvent){E.abortEvent.fire(E,B);}this.handleTransactionResponse(E,G,true);}return D;},isCallInProgress:function(A){A=A||{};if(A.xhr&&A.conn){return A.conn.readyState!==4&&A.conn.readyState!==0;}else{if(A.xdr&&A.conn){return A.conn.isCallInProgress(A.tId);}else{if(A.upload===true){return document.getElementById("yuiIO"+A.tId)?true:false;}else{return false;}}}},releaseObject:function(A){if(A&&A.conn){A.conn=null;A=null;}}};(function(){var G=YAHOO.util.Connect,H={};function D(I){var J='<object id="YUIConnectionSwf" type="application/x-shockwave-flash" data="'+I+'" width="0" height="0">'+'<param name="movie" value="'+I+'">'+'<param name="allowScriptAccess" value="always">'+"</object>",K=document.createElement("div");document.body.appendChild(K);K.innerHTML=J;}function B(L,I,J,M,K){H[parseInt(L.tId)]={"o":L,"c":M};if(K){M.method=I;M.data=K;}L.conn.send(J,M,L.tId);}function E(I){D(I);G._transport=document.getElementById("YUIConnectionSwf");}function C(){G.xdrReadyEvent.fire();}function A(J,I){if(J){G.startEvent.fire(J,I.argument);if(J.startEvent){J.startEvent.fire(J,I.argument);}}}function F(J){var K=H[J.tId].o,I=H[J.tId].c;if(J.statusText==="xdr:start"){A(K,I);return;}J.responseText=decodeURI(J.responseText);K.r=J;if(I.argument){K.r.argument=I.argument;}this.handleTransactionResponse(K,I,J.statusText==="xdr:abort"?true:false);delete H[J.tId];}G.xdr=B;G.swf=D;G.transport=E;G.xdrReadyEvent=new YAHOO.util.CustomEvent("xdrReady");G.xdrReady=C;G.handleXdrResponse=F;})();(function(){var D=YAHOO.util.Connect,F=YAHOO.util.Event;D._isFormSubmit=false;D._isFileUpload=false;D._formNode=null;D._sFormData=null;D._submitElementValue=null;D.uploadEvent=new YAHOO.util.CustomEvent("upload"),D._hasSubmitListener=function(){if(F){F.addListener(document,"click",function(J){var I=F.getTarget(J),H=I.nodeName.toLowerCase();if((H==="input"||H==="button")&&(I.type&&I.type.toLowerCase()=="submit")){D._submitElementValue=encodeURIComponent(I.name)+"="+encodeURIComponent(I.value);}});return true;}return false;}();function G(T,O,J){var S,I,R,P,W,Q=false,M=[],V=0,L,N,K,U,H;this.resetFormState();if(typeof T=="string"){S=(document.getElementById(T)||document.forms[T]);}else{if(typeof T=="object"){S=T;}else{return;}}if(O){this.createFrame(J?J:null);this._isFormSubmit=true;this._isFileUpload=true;this._formNode=S;return;}for(L=0,N=S.elements.length;L<N;++L){I=S.elements[L];W=I.disabled;R=I.name;if(!W&&R){R=encodeURIComponent(R)+"=";P=encodeURIComponent(I.value);switch(I.type){case"select-one":if(I.selectedIndex>-1){H=I.options[I.selectedIndex];M[V++]=R+encodeURIComponent((H.attributes.value&&H.attributes.value.specified)?H.value:H.text);}break;case"select-multiple":if(I.selectedIndex>-1){for(K=I.selectedIndex,U=I.options.length;K<U;++K){H=I.options[K];if(H.selected){M[V++]=R+encodeURIComponent((H.attributes.value&&H.attributes.value.specified)?H.value:H.text);}}}break;case"radio":case"checkbox":if(I.checked){M[V++]=R+P;}break;case"file":case undefined:case"reset":case"button":break;case"submit":if(Q===false){if(this._hasSubmitListener&&this._submitElementValue){M[V++]=this._submitElementValue;}Q=true;}break;default:M[V++]=R+P;}}}this._isFormSubmit=true;this._sFormData=M.join("&");this.initHeader("Content-Type",this._default_form_header);return this._sFormData;}function C(){this._isFormSubmit=false;this._isFileUpload=false;this._formNode=null;this._sFormData="";}function B(H){var I="yuiIO"+this._transaction_id,J;if(YAHOO.env.ua.ie){J=document.createElement('<iframe id="'+I+'" name="'+I+'" />');if(typeof H=="boolean"){J.src="javascript:false";}}else{J=document.createElement("iframe");J.id=I;J.name=I;}J.style.position="absolute";J.style.top="-1000px";J.style.left="-1000px";document.body.appendChild(J);}function E(H){var K=[],I=H.split("&"),J,L;for(J=0;J<I.length;J++){L=I[J].indexOf("=");if(L!=-1){K[J]=document.createElement("input");K[J].type="hidden";K[J].name=decodeURIComponent(I[J].substring(0,L));K[J].value=decodeURIComponent(I[J].substring(L+1));this._formNode.appendChild(K[J]);}}return K;}function A(K,V,L,J){var Q="yuiIO"+K.tId,R="multipart/form-data",T=document.getElementById(Q),M=(document.documentMode&&document.documentMode===8)?true:false,W=this,S=(V&&V.argument)?V.argument:null,U,P,I,O,H,N;H={action:this._formNode.getAttribute("action"),method:this._formNode.getAttribute("method"),target:this._formNode.getAttribute("target")};this._formNode.setAttribute("action",L);this._formNode.setAttribute("method","POST");this._formNode.setAttribute("target",Q);if(YAHOO.env.ua.ie&&!M){this._formNode.setAttribute("encoding",R);}else{this._formNode.setAttribute("enctype",R);}if(J){U=this.appendPostData(J);}this._formNode.submit();this.startEvent.fire(K,S);if(K.startEvent){K.startEvent.fire(K,S);}if(V&&V.timeout){this._timeOut[K.tId]=window.setTimeout(function(){W.abort(K,V,true);},V.timeout);}if(U&&U.length>0){for(P=0;P<U.length;P++){this._formNode.removeChild(U[P]);}}for(I in H){if(YAHOO.lang.hasOwnProperty(H,I)){if(H[I]){this._formNode.setAttribute(I,H[I]);}else{this._formNode.removeAttribute(I);}}}this.resetFormState();N=function(){if(V&&V.timeout){window.clearTimeout(W._timeOut[K.tId]);delete W._timeOut[K.tId];}W.completeEvent.fire(K,S);if(K.completeEvent){K.completeEvent.fire(K,S);
}O={tId:K.tId,argument:V.argument};try{O.responseText=T.contentWindow.document.body?T.contentWindow.document.body.innerHTML:T.contentWindow.document.documentElement.textContent;O.responseXML=T.contentWindow.document.XMLDocument?T.contentWindow.document.XMLDocument:T.contentWindow.document;}catch(X){}if(V&&V.upload){if(!V.scope){V.upload(O);}else{V.upload.apply(V.scope,[O]);}}W.uploadEvent.fire(O);if(K.uploadEvent){K.uploadEvent.fire(O);}F.removeListener(T,"load",N);setTimeout(function(){document.body.removeChild(T);W.releaseObject(K);},100);};F.addListener(T,"load",N);}D.setForm=G;D.resetFormState=C;D.createFrame=B;D.appendPostData=E;D.uploadFile=A;})();YAHOO.register("connection",YAHOO.util.Connect,{version:"2.8.0r4",build:"2449"});

test_question_id = '';

/* flag question */
function flag_question(input_test_question_id, checked) {

	var is_checked = 0;
	if (checked) {
		is_checked = 1;
	}

    var url = '/test_centre/flag_question_ajax/'+input_test_question_id+'/'+is_checked;
    var transaction = YAHOO.util.Connect.asyncRequest('GET', url);

}

/* billing form */
function get_billing_fields(method) {

	var url = '/user/get_billing_fields/' + method;
	var transaction = YAHOO.util.Connect.asyncRequest('GET', url, 
		{
			success: function(o) {
				if (o.responseText !== undefined) {
				
					var spacer = document.getElementById('spacer');
					spacer.innerHTML=o.responseText;
				}    
			},
			failure: function(o) {
		 
			}
		}
		, null
	);
}

/* school searching */
function is_teacher(role_value) {

	if (role_value == 'teacher') {
		return true;
	}
	return false;
}

function get_cities(state_value) {

	var url = '/ajax/get_cities/'+state_value;

    var transaction = YAHOO.util.Connect.asyncRequest('GET', url, 
		{
			success: function(o) {
				if (o.responseText !== undefined) {
				
					var search_fields = document.getElementById('city_list');
					search_fields.innerHTML=o.responseText;
					
					var search_fields = document.getElementById('school_list');
					search_fields.innerHTML='';
				}    
			},
			failure: function(o) {
		 
			}
		}
		, null
    );

}

function get_schools(state_value, city_value) {

//	get_cities(state_value);

	var url = '/ajax/get_schools/'+state_value+'/'+city_value;

    var transaction = YAHOO.util.Connect.asyncRequest('GET', url, 
		{
			success: function(o) {
				if (o.responseText !== undefined) {
				
					var search_fields = document.getElementById('school_list');
					search_fields.innerHTML=o.responseText;
				}    
			},
			failure: function(o) {
		 
			}
		}
		, null
    );

}
/*
var get_schools_ajax_callback =
{
    success: function(o) {
        if (o.responseText !== undefined) {
        
	        var search_fields = document.getElementById('school_search_fields');
        	search_fields.innerHTML=o.responseText;
        }    
    },
    failure: function(o) {
 
    }
};
*/

function get_year_ranks(year) {
	var url = '/ajax/get_home_stats/'+year;

    var transaction = YAHOO.util.Connect.asyncRequest('GET', url, 
		{
			success: function(o) {
				if (o.responseText !== undefined) {
				
					var div = document.getElementById('panel_ranks');
					div.innerHTML=o.responseText;
				}    
			},
			failure: function(o) {
		 
			}
		}
		, null
    );
}


/* SWFObject v2.1 <http://code.google.com/p/swfobject/>
	Copyright (c) 2007-2008 Geoff Stearns, Michael Williams, and Bobby van der Sluis
	This software is released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
*/
var swfobject=function(){var b="undefined",Q="object",n="Shockwave Flash",p="ShockwaveFlash.ShockwaveFlash",P="application/x-shockwave-flash",m="SWFObjectExprInst",j=window,K=document,T=navigator,o=[],N=[],i=[],d=[],J,Z=null,M=null,l=null,e=false,A=false;var h=function(){var v=typeof K.getElementById!=b&&typeof K.getElementsByTagName!=b&&typeof K.createElement!=b,AC=[0,0,0],x=null;if(typeof T.plugins!=b&&typeof T.plugins[n]==Q){x=T.plugins[n].description;if(x&&!(typeof T.mimeTypes!=b&&T.mimeTypes[P]&&!T.mimeTypes[P].enabledPlugin)){x=x.replace(/^.*\s+(\S+\s+\S+$)/,"$1");AC[0]=parseInt(x.replace(/^(.*)\..*$/,"$1"),10);AC[1]=parseInt(x.replace(/^.*\.(.*)\s.*$/,"$1"),10);AC[2]=/r/.test(x)?parseInt(x.replace(/^.*r(.*)$/,"$1"),10):0}}else{if(typeof j.ActiveXObject!=b){var y=null,AB=false;try{y=new ActiveXObject(p+".7")}catch(t){try{y=new ActiveXObject(p+".6");AC=[6,0,21];y.AllowScriptAccess="always"}catch(t){if(AC[0]==6){AB=true}}if(!AB){try{y=new ActiveXObject(p)}catch(t){}}}if(!AB&&y){try{x=y.GetVariable("$version");if(x){x=x.split(" ")[1].split(",");AC=[parseInt(x[0],10),parseInt(x[1],10),parseInt(x[2],10)]}}catch(t){}}}}var AD=T.userAgent.toLowerCase(),r=T.platform.toLowerCase(),AA=/webkit/.test(AD)?parseFloat(AD.replace(/^.*webkit\/(\d+(\.\d+)?).*$/,"$1")):false,q=false,z=r?/win/.test(r):/win/.test(AD),w=r?/mac/.test(r):/mac/.test(AD);/*@cc_on q=true;@if(@_win32)z=true;@elif(@_mac)w=true;@end@*/return{w3cdom:v,pv:AC,webkit:AA,ie:q,win:z,mac:w}}();var L=function(){if(!h.w3cdom){return }f(H);if(h.ie&&h.win){try{K.write("<script id=__ie_ondomload defer=true src=//:><\/script>");J=C("__ie_ondomload");if(J){I(J,"onreadystatechange",S)}}catch(q){}}if(h.webkit&&typeof K.readyState!=b){Z=setInterval(function(){if(/loaded|complete/.test(K.readyState)){E()}},10)}if(typeof K.addEventListener!=b){K.addEventListener("DOMContentLoaded",E,null)}R(E)}();function S(){if(J.readyState=="complete"){J.parentNode.removeChild(J);E()}}function E(){if(e){return }if(h.ie&&h.win){var v=a("span");try{var u=K.getElementsByTagName("body")[0].appendChild(v);u.parentNode.removeChild(u)}catch(w){return }}e=true;if(Z){clearInterval(Z);Z=null}var q=o.length;for(var r=0;r<q;r++){o[r]()}}function f(q){if(e){q()}else{o[o.length]=q}}function R(r){if(typeof j.addEventListener!=b){j.addEventListener("load",r,false)}else{if(typeof K.addEventListener!=b){K.addEventListener("load",r,false)}else{if(typeof j.attachEvent!=b){I(j,"onload",r)}else{if(typeof j.onload=="function"){var q=j.onload;j.onload=function(){q();r()}}else{j.onload=r}}}}}function H(){var t=N.length;for(var q=0;q<t;q++){var u=N[q].id;if(h.pv[0]>0){var r=C(u);if(r){N[q].width=r.getAttribute("width")?r.getAttribute("width"):"0";N[q].height=r.getAttribute("height")?r.getAttribute("height"):"0";if(c(N[q].swfVersion)){if(h.webkit&&h.webkit<312){Y(r)}W(u,true)}else{if(N[q].expressInstall&&!A&&c("6.0.65")&&(h.win||h.mac)){k(N[q])}else{O(r)}}}}else{W(u,true)}}}function Y(t){var q=t.getElementsByTagName(Q)[0];if(q){var w=a("embed"),y=q.attributes;if(y){var v=y.length;for(var u=0;u<v;u++){if(y[u].nodeName=="DATA"){w.setAttribute("src",y[u].nodeValue)}else{w.setAttribute(y[u].nodeName,y[u].nodeValue)}}}var x=q.childNodes;if(x){var z=x.length;for(var r=0;r<z;r++){if(x[r].nodeType==1&&x[r].nodeName=="PARAM"){w.setAttribute(x[r].getAttribute("name"),x[r].getAttribute("value"))}}}t.parentNode.replaceChild(w,t)}}function k(w){A=true;var u=C(w.id);if(u){if(w.altContentId){var y=C(w.altContentId);if(y){M=y;l=w.altContentId}}else{M=G(u)}if(!(/%$/.test(w.width))&&parseInt(w.width,10)<310){w.width="310"}if(!(/%$/.test(w.height))&&parseInt(w.height,10)<137){w.height="137"}K.title=K.title.slice(0,47)+" - Flash Player Installation";var z=h.ie&&h.win?"ActiveX":"PlugIn",q=K.title,r="MMredirectURL="+j.location+"&MMplayerType="+z+"&MMdoctitle="+q,x=w.id;if(h.ie&&h.win&&u.readyState!=4){var t=a("div");x+="SWFObjectNew";t.setAttribute("id",x);u.parentNode.insertBefore(t,u);u.style.display="none";var v=function(){u.parentNode.removeChild(u)};I(j,"onload",v)}U({data:w.expressInstall,id:m,width:w.width,height:w.height},{flashvars:r},x)}}function O(t){if(h.ie&&h.win&&t.readyState!=4){var r=a("div");t.parentNode.insertBefore(r,t);r.parentNode.replaceChild(G(t),r);t.style.display="none";var q=function(){t.parentNode.removeChild(t)};I(j,"onload",q)}else{t.parentNode.replaceChild(G(t),t)}}function G(v){var u=a("div");if(h.win&&h.ie){u.innerHTML=v.innerHTML}else{var r=v.getElementsByTagName(Q)[0];if(r){var w=r.childNodes;if(w){var q=w.length;for(var t=0;t<q;t++){if(!(w[t].nodeType==1&&w[t].nodeName=="PARAM")&&!(w[t].nodeType==8)){u.appendChild(w[t].cloneNode(true))}}}}}return u}function U(AG,AE,t){var q,v=C(t);if(v){if(typeof AG.id==b){AG.id=t}if(h.ie&&h.win){var AF="";for(var AB in AG){if(AG[AB]!=Object.prototype[AB]){if(AB.toLowerCase()=="data"){AE.movie=AG[AB]}else{if(AB.toLowerCase()=="styleclass"){AF+=' class="'+AG[AB]+'"'}else{if(AB.toLowerCase()!="classid"){AF+=" "+AB+'="'+AG[AB]+'"'}}}}}var AD="";for(var AA in AE){if(AE[AA]!=Object.prototype[AA]){AD+='<param name="'+AA+'" value="'+AE[AA]+'" />'}}v.outerHTML='<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"'+AF+">"+AD+"</object>";i[i.length]=AG.id;q=C(AG.id)}else{if(h.webkit&&h.webkit<312){var AC=a("embed");AC.setAttribute("type",P);for(var z in AG){if(AG[z]!=Object.prototype[z]){if(z.toLowerCase()=="data"){AC.setAttribute("src",AG[z])}else{if(z.toLowerCase()=="styleclass"){AC.setAttribute("class",AG[z])}else{if(z.toLowerCase()!="classid"){AC.setAttribute(z,AG[z])}}}}}for(var y in AE){if(AE[y]!=Object.prototype[y]){if(y.toLowerCase()!="movie"){AC.setAttribute(y,AE[y])}}}v.parentNode.replaceChild(AC,v);q=AC}else{var u=a(Q);u.setAttribute("type",P);for(var x in AG){if(AG[x]!=Object.prototype[x]){if(x.toLowerCase()=="styleclass"){u.setAttribute("class",AG[x])}else{if(x.toLowerCase()!="classid"){u.setAttribute(x,AG[x])}}}}for(var w in AE){if(AE[w]!=Object.prototype[w]&&w.toLowerCase()!="movie"){F(u,w,AE[w])}}v.parentNode.replaceChild(u,v);q=u}}}return q}function F(t,q,r){var u=a("param");u.setAttribute("name",q);u.setAttribute("value",r);t.appendChild(u)}function X(r){var q=C(r);if(q&&(q.nodeName=="OBJECT"||q.nodeName=="EMBED")){if(h.ie&&h.win){if(q.readyState==4){B(r)}else{j.attachEvent("onload",function(){B(r)})}}else{q.parentNode.removeChild(q)}}}function B(t){var r=C(t);if(r){for(var q in r){if(typeof r[q]=="function"){r[q]=null}}r.parentNode.removeChild(r)}}function C(t){var q=null;try{q=K.getElementById(t)}catch(r){}return q}function a(q){return K.createElement(q)}function I(t,q,r){t.attachEvent(q,r);d[d.length]=[t,q,r]}function c(t){var r=h.pv,q=t.split(".");q[0]=parseInt(q[0],10);q[1]=parseInt(q[1],10)||0;q[2]=parseInt(q[2],10)||0;return(r[0]>q[0]||(r[0]==q[0]&&r[1]>q[1])||(r[0]==q[0]&&r[1]==q[1]&&r[2]>=q[2]))?true:false}function V(v,r){if(h.ie&&h.mac){return }var u=K.getElementsByTagName("head")[0],t=a("style");t.setAttribute("type","text/css");t.setAttribute("media","screen");if(!(h.ie&&h.win)&&typeof K.createTextNode!=b){t.appendChild(K.createTextNode(v+" {"+r+"}"))}u.appendChild(t);if(h.ie&&h.win&&typeof K.styleSheets!=b&&K.styleSheets.length>0){var q=K.styleSheets[K.styleSheets.length-1];if(typeof q.addRule==Q){q.addRule(v,r)}}}function W(t,q){var r=q?"visible":"hidden";if(e&&C(t)){C(t).style.visibility=r}else{V("#"+t,"visibility:"+r)}}function g(s){var r=/[\\\"<>\.;]/;var q=r.exec(s)!=null;return q?encodeURIComponent(s):s}var D=function(){if(h.ie&&h.win){window.attachEvent("onunload",function(){var w=d.length;for(var v=0;v<w;v++){d[v][0].detachEvent(d[v][1],d[v][2])}var t=i.length;for(var u=0;u<t;u++){X(i[u])}for(var r in h){h[r]=null}h=null;for(var q in swfobject){swfobject[q]=null}swfobject=null})}}();return{registerObject:function(u,q,t){if(!h.w3cdom||!u||!q){return }var r={};r.id=u;r.swfVersion=q;r.expressInstall=t?t:false;N[N.length]=r;W(u,false)},getObjectById:function(v){var q=null;if(h.w3cdom){var t=C(v);if(t){var u=t.getElementsByTagName(Q)[0];if(!u||(u&&typeof t.SetVariable!=b)){q=t}else{if(typeof u.SetVariable!=b){q=u}}}}return q},embedSWF:function(x,AE,AB,AD,q,w,r,z,AC){if(!h.w3cdom||!x||!AE||!AB||!AD||!q){return }AB+="";AD+="";if(c(q)){W(AE,false);var AA={};if(AC&&typeof AC===Q){for(var v in AC){if(AC[v]!=Object.prototype[v]){AA[v]=AC[v]}}}AA.data=x;AA.width=AB;AA.height=AD;var y={};if(z&&typeof z===Q){for(var u in z){if(z[u]!=Object.prototype[u]){y[u]=z[u]}}}if(r&&typeof r===Q){for(var t in r){if(r[t]!=Object.prototype[t]){if(typeof y.flashvars!=b){y.flashvars+="&"+t+"="+r[t]}else{y.flashvars=t+"="+r[t]}}}}f(function(){U(AA,y,AE);if(AA.id==AE){W(AE,true)}})}else{if(w&&!A&&c("6.0.65")&&(h.win||h.mac)){A=true;W(AE,false);f(function(){var AF={};AF.id=AF.altContentId=AE;AF.width=AB;AF.height=AD;AF.expressInstall=w;k(AF)})}}},getFlashPlayerVersion:function(){return{major:h.pv[0],minor:h.pv[1],release:h.pv[2]}},hasFlashPlayerVersion:c,createSWF:function(t,r,q){if(h.w3cdom){return U(t,r,q)}else{return undefined}},removeSWF:function(q){if(h.w3cdom){X(q)}},createCSS:function(r,q){if(h.w3cdom){V(r,q)}},addDomLoadEvent:f,addLoadEvent:R,getQueryParamValue:function(v){var u=K.location.search||K.location.hash;if(v==null){return g(u)}if(u){var t=u.substring(1).split("&");for(var r=0;r<t.length;r++){if(t[r].substring(0,t[r].indexOf("="))==v){return g(t[r].substring((t[r].indexOf("=")+1)))}}}return""},expressInstallCallback:function(){if(A&&M){var q=C(m);if(q){q.parentNode.replaceChild(M,q);if(l){W(l,true);if(h.ie&&h.win){M.style.display="block"}}M=null;l=null;A=false}}}}}();

/*  Prototype JavaScript framework, version 1.6.0.3
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.3',

  Browser: {
    IE:     !!(window.attachEvent &&
      navigator.userAgent.indexOf('Opera') === -1),
    Opera:  navigator.userAgent.indexOf('Opera') > -1,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 &&
      navigator.userAgent.indexOf('KHTML') === -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    SelectorsAPI: !!document.querySelector,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div')['__proto__'] &&
      document.createElement('div')['__proto__'] !==
        document.createElement('form')['__proto__']
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value;
        value = (function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method);

        value.valueOf = method.valueOf.bind(method);
        value.toString = method.toString.bind(method);
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return !!(object && object.nodeType == 1);
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1]
      .replace(/\s+/g, '').split(',');
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  defer: function() {
    var args = [0.01].concat($A(arguments));
    return this.delay.apply(this, args);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.stripTags().replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    try {
      this._each(function(value) {
        iterator.call(context, value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    var index = -number, slices = [], array = this.toArray();
    if (number < 1) return array;
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator.call(context, value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator.call(context, value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator.call(context, value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    var result;
    this.each(function(value, index) {
      if (iterator.call(context, value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator || Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator.call(context, value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    this.each(function(value, index) {
      memo = iterator.call(context, memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator.call(context, value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator || Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator.call(context, value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    var results = [];
    this.each(function(value, index) {
      if (!iterator.call(context, value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    return this.map(function(value, index) {
      return {
        value: value,
        criteria: iterator.call(context, value, index)
      };
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    // In Safari, only use the `toArray` method if it's not a NodeList.
    // A NodeList is a function, has an function `item` property, and a numeric
    // `length` property. Adapted from Google Doctype.
    if (!(typeof iterable === 'function' && typeof iterable.length ===
        'number' && typeof iterable.item === 'function') && iterable.toArray)
      return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator, context) {
    $R(0, this, true).each(iterator, context);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      // simulating poorly supported hasOwnProperty
      if (this._object[key] !== Object.prototype[key])
        return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.inject([], function(results, pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return results.concat(values.map(toQueryPair.curry(key)));
        } else results.push(toQueryPair(key, values));
        return results;
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
  if (element) this.Element.prototype = element.prototype;
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    element = $(element);
    element.style.display = 'none';
    return element;
  },

  show: function(element) {
    element = $(element);
    element.style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      Element.select(element, expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (ancestor.contains)
      return ancestor.contains(element) && ancestor !== element;

    while (element = element.parentNode)
      if (element == ancestor) return true;

    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value || value == 'auto') {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = element.getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (Prototype.Browser.Opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName.toUpperCase() == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return element;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return element;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      // IE throws an error if element is not in document
      try { element.offsetParent }
      catch(e) { return $(document.body) }
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        try { element.offsetParent }
        catch(e) { return Element._returnOffset(0,0) }
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
    function(proceed, element) {
      try { element.offsetParent }
      catch(e) { return Element._returnOffset(0,0) }
      return proceed(element);
    }
  );

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName.toUpperCase() == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return !!(node && node.specified);
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div')['__proto__']) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div')['__proto__'];
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName.toUpperCase(), property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName)['__proto__'];
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { }, B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      if (B.WebKit && !document.evaluate) {
        // Safari <3.0 needs self.innerWidth/Height
        dimensions[d] = self['inner' + D];
      } else if (B.Opera && parseFloat(window.opera.version()) < 9.5) {
        // Opera <9.5 needs document.body.clientWidth/Height
        dimensions[d] = document.body['client' + D]
      } else {
        dimensions[d] = document.documentElement['client' + D];
      }
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum's DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();

    if (this.shouldUseSelectorsAPI()) {
      this.mode = 'selectorsAPI';
    } else if (this.shouldUseXPath()) {
      this.mode = 'xpath';
      this.compileXPathMatcher();
    } else {
      this.mode = "normal";
      this.compileMatcher();
    }

  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(e))
      return false;

    return true;
  },

  shouldUseSelectorsAPI: function() {
    if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

    if (!Selector._div) Selector._div = new Element('div');

    // Make sure the browser treats the selector as valid. Test on an
    // isolated element to minimize cost of this check.
    try {
      Selector._div.querySelector(this.expression);
    } catch(e) {
      return false;
    }

    return true;
  },

  compileMatcher: function() {
    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
            new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    var e = this.expression, results;

    switch (this.mode) {
      case 'selectorsAPI':
        // querySelectorAll queries document-wide, then filters to descendants
        // of the context element. That's not what we want.
        // Add an explicit context to the selector if necessary.
        if (root !== document) {
          var oldId = root.id, id = $(root).identify();
          e = "#" + id + " " + e;
        }

        results = $A(root.querySelectorAll(e)).map(Element.extend);
        root.id = oldId;

        return results;
      case 'xpath':
        return document._getElementsByXPath(this.xpath, root);
      default:
       return this.matcher(root);
    }
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0)]",
      'checked':     "[@checked]",
      'disabled':    "[(@disabled) and (@type!='hidden')]",
      'enabled':     "[not(@disabled) and (@type!='hidden')]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[((?:[\w]+:)?[\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || node.firstChild) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled && (!node.type || node.type !== 'hidden'))
          results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
    '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
    '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase() +
     '-').include('-' + (v || "").toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, value) {
    if (Object.isUndefined(value))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, currentValue, single = !Object.isArray(value);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        currentValue = this.optionValue(opt);
        if (single) {
          if (currentValue == value) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = value.include(currentValue);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      event = Event.extend(event);

      var node          = event.target,
          type          = event.type,
          currentTarget = event.currentTarget;

      if (currentTarget && currentTarget.tagName) {
        // Firefox screws up the "click" event when moving between radio buttons
        // via arrow keys. It also screws up the "load" and "error" events on images,
        // reporting the document as the target instead of the original image.
        if (type === 'load' || type === 'error' ||
          (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
            && currentTarget.type === 'radio'))
              node = currentTarget;
      }
      if (node.nodeType == Node.TEXT_NODE) node = node.parentNode;
      return Element.extend(node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      var docElement = document.documentElement,
      body = document.body || { scrollLeft: 0, scrollTop: 0 };
      return {
        x: event.pageX || (event.clientX +
          (docElement.scrollLeft || body.scrollLeft) -
          (docElement.clientLeft || 0)),
        y: event.pageY || (event.clientY +
          (docElement.scrollTop || body.scrollTop) -
          (docElement.clientTop || 0))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents")['__proto__'];
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }


  // Internet Explorer needs to remove event handlers on page unload
  // in order to avoid memory leaks.
  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  // Safari has a dummy event handler on page unload so that it won't
  // use its bfcache. Safari <= 3.1 has an issue with restoring the "document"
  // object when page is returned to via the back button using its bfcache.
  if (Prototype.Browser.WebKit) {
    window.addEventListener('unload', Prototype.emptyFunction, false);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();


/**
 * DeeJ's countdown timer 09/08/07
 */

/*
 * IMPLEMENTATION
 *
 * <div id="countdowncontainer" style="float: right;" align="right">
 * <!-- Dynamic Javascript Content Gets Writen Here -->
 * </div>
 *
 * <script type="text/javascript">
 *
 * var futuredate=new cdtime("countdowncontainer", <?php $this->p($refresh); ?>);
 * futuredate.displaycountdown("days", formatresults);
 *
 * </script>
 */
//var futuredate = new cdtime("countdowncontainer", 111);
//futuredate.displaycountdown("days", formatresults);

function cdtime(container, timediff) {
	if (!document.getElementById || !document.getElementById(container)) return false;
	this.contentId = container;
	this.container = document.getElementById(container);
  this.containerName = container;
	this.currentTime = new Date();
	this.timediff = timediff;
	this.timesup = false;
	this.updateTime();
}

cdtime.prototype.updateTime = function() {
	var thisobj = this;
	this.currentTime.setSeconds(this.currentTime.getSeconds()+1);
	setTimeout(function(){thisobj.updateTime()}, 1000); //update time every second
}

cdtime.prototype.displaycountdown = function(baseunit, functionref) {
	this.baseunit = baseunit;
	this.formatresults = functionref;
	this.showresults();
}

cdtime.prototype.showresults = function() {
	var thisobj = this
	//var timediff=(this.targetdate-this.currentTime)/1000 //difference btw target date and current date, in seconds
	this.timediff  = this.timediff - 1;
	var timediff = this.timediff;

	if (timediff<0){ //if time is up
		this.timesup = true;
    	this.writeit(this.formatresults(), this.containerName)
		//this.container.innerHTML = this.formatresults();
		return;
	}

	var oneMinute = 60; //minute unit in seconds
	var oneHour = 60 * 60; //hour unit in seconds
	var oneDay = 60 * 60 * 24; //day unit in seconds
	var dayfield = Math.floor(timediff/oneDay);
	var hourfield = Math.floor((timediff-dayfield*oneDay)/oneHour);
	var minutefield = Math.floor((timediff-dayfield*oneDay-hourfield*oneHour)/oneMinute);
	var secondfield = Math.floor((timediff-dayfield*oneDay-hourfield*oneHour-minutefield*oneMinute));

	if (this.baseunit == "hours"){
		//if base unit is hours, set "hourfield" to be topmost level
		hourfield = dayfield*24+hourfield;
		dayfield = "n/a";
	}
	else if (this.baseunit == "minutes"){
		//if base unit is minutes, set "minutefield" to be topmost level
		minutefield = dayfield * 24 * 60 + hourfield * 60 + minutefield;
		dayfield=hourfield = "n/a";
	}
	else if (this.baseunit == "seconds"){ //if base unit is seconds, set "secondfield" to be topmost level
		var secondfield = timediff;
		dayfield = hourfield = minutefield = "n/a";
	}

	//this.container.innerHTML=this.formatresults(dayfield, hourfield, minutefield, secondfield);
	this.writeit(this.formatresults(dayfield, hourfield, minutefield, secondfield), this.contentId);
	setTimeout(function(){thisobj.showresults()}, 1000); //update results every second;
}

////////////////////////////////////////////////
///// CUSTOM FORMAT OUTPUT FUNCTIONS BELOW /////
////////////////////////////////////////////////

//Create your own custom format function to pass into cdtime.displaycountdown()
//Use arguments[0] to access "Days" left
//Use arguments[1] to access "Hours" left
//Use arguments[2] to access "Minutes" left
//Use arguments[3] to access "Seconds" left

function formatresults() {

	var className = ""; //"timer_finished";
	if (this.timesup == false){//if target date/time not yet met

		if (arguments[3].toString().length == 1) {
			arguments[3] = '0' + arguments[3];
		}

		if (arguments[0] > 0) {
			var displaystring = arguments[0]+" days "+arguments[1]+"hr "+arguments[2]+"min "+arguments[3]+"s";
		} else if (arguments[1] > 0) {
			var displaystring = arguments[1]+"hr "+arguments[2]+"min "+arguments[3]+"s";
		} else if (arguments[2] > 0) {
			var displaystring = arguments[2]+"min "+arguments[3]+"s";
		} else {
			var displaystring = "0min " + arguments[3]+"s";
		}
		
		className = ""; //"timer_started";
		// 0 hours left
		if (arguments[1] == 'n/a') {
			// less than 1 minute
			if (arguments[2] < 1) {
				//className = "timer_alert_last";
			}
			// less than 5 minutes
			else if (arguments[2] < 5) {
				//className = "timer_alert_crucial";
			}
			// less than 10 minutes
			else if (arguments[2] < 10) {
				//className = "timer_alert_warning";
			}
		}		
	}
	else{ //else if target date/time met
		var displaystring = "0s";
	}

	return '<span class="'+className+'">' + displaystring + '</span>';
}

///////////////////////////////////////////////////////////////
// This writes content to anything with the selected ID tag. //
// So far i know it definitly works with TD & DIV tags.      //
///////////////////////////////////////////////////////////////
cdtime.prototype.writeit= function( content, content_id ) {
	if ( document.getElementById ) {
		x = document.getElementById(content_id);
		x.innerHTML = '';
		x.innerHTML = content;
	} else if( document.all ) {
		x = document.all[content_id];
		x.innerHTML = content;
	} else if( document.layers ) {
		x = document.layers[content_id];
		text2 = '<P CLASS="testclass">' + content + '</P>';
		x.document.open();
		x.document.write(text2);
		x.document.close();
	}
}