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;  
}