var uniquepageid=window.location.href.replace("http://"+window.location.hostname, "").replace(/^\//, "");

function animatedcollapse(divId, animatetime, persistexpand, initstate){
this.divId=divId;
this.divObj=document.getElementById(divId);
this.divObj.style.overflow="hidden";
this.timelength=animatetime;
this.initstate=(typeof initstate!="undefined" && initstate=="block")? "block" : "contract";
this.isExpanded=animatedcollapse.getCookie(uniquepageid+"-"+divId);
this.contentheight=parseInt(this.divObj.style.height);
var thisobj=this;
if (isNaN(this.contentheight)){
animatedcollapse.dotask(window, function(){thisobj._getheight(persistexpand)}, "load");
if (!persistexpand && this.initstate=="contract" || persistexpand && this.isExpanded!="yes" && this.isExpanded!="")
this.divObj.style.visibility="hidden";
}
else if (!persistexpand && this.initstate=="contract" || persistexpand && this.isExpanded!="yes" && this.isExpanded!="")
this.divObj.style.height=0;
if (persistexpand)
animatedcollapse.dotask(window, function(){animatedcollapse.setCookie(uniquepageid+"-"+thisobj.divId, thisobj.isExpanded)}, "unload");
}

animatedcollapse.prototype._getheight=function(persistexpand){
this.contentheight=this.divObj.offsetHeight;
if (!persistexpand && this.initstate=="contract" || persistexpand && this.isExpanded!="yes"){
this.divObj.style.height=0;
this.divObj.style.visibility="visible";
}
else
this.divObj.style.height=this.contentheight+"px";
}

animatedcollapse.prototype._slideengine=function(direction){
var elapsed=new Date().getTime()-this.startTime;
var thisobj=this;
if (elapsed<this.timelength){
var distancepercent=(direction=="down")? animatedcollapse.curveincrement(elapsed/this.timelength) : 1-animatedcollapse.curveincrement(elapsed/this.timelength);
this.divObj.style.height=distancepercent * this.contentheight +"px";
this.runtimer=setTimeout(function(){thisobj._slideengine(direction)}, 10);
}
else{
this.divObj.style.height=(direction=="down")? this.contentheight+"px" : 0;
this.isExpanded=(direction=="down")? "yes" : "no";
this.runtimer=null;
}
}


animatedcollapse.prototype.slidedown=function(){
if (typeof this.runtimer=="undefined" || this.runtimer==null){
if (isNaN(this.contentheight))
alert("Please wait until document has fully loaded then click again");
else if (parseInt(this.divObj.style.height)==0){
this.startTime=new Date().getTime();
this._slideengine("down");
}
}
}

animatedcollapse.prototype.slideup=function(){
if (typeof this.runtimer=="undefined" || this.runtimer==null){
if (isNaN(this.contentheight))
alert("Please wait until document has fully loaded then click again");
else if (parseInt(this.divObj.style.height)==this.contentheight){
this.startTime=new Date().getTime();
this._slideengine("up");
}
}
}

animatedcollapse.prototype.slideit=function(){
if (isNaN(this.contentheight))
alert("Please wait until document has fully loaded then click again");
else if (parseInt(this.divObj.style.height)==0)
this.slidedown();
else if (parseInt(this.divObj.style.height)==this.contentheight)
this.slideup();
}

animatedcollapse.curveincrement=function(percent){
return (1-Math.cos(percent*Math.PI)) / 2;
}

animatedcollapse.dotask=function(target, functionref, tasktype){
var tasktype=(window.addEventListener)? tasktype : "on"+tasktype;
if (target.addEventListener)
target.addEventListener(tasktype, functionref, false);
else if (target.attachEvent)
target.attachEvent(tasktype, functionref);
}

animatedcollapse.getCookie=function(Name){
var re=new RegExp(Name+"=[^;]+", "i");
if (document.cookie.match(re))
return document.cookie.match(re)[0].split("=")[1];
return "";
}

animatedcollapse.setCookie=function(name, value){
document.cookie = name+"="+value;
}