//Chrome Drop Down Menu: Dynamic Drive (dynamicdrive.com)

var cssdropdown={
disappeardelay: 250, //set delay in miliseconds before menu disappears onmouseout

//No need to edit beyond here////////////////////////
dropmenuobj: null, ie: document.all, firefox: document.getElementById&&!document.all,

getposOffset:function(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
//totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
totaloffset=(offsettype=="left")? totaloffset : totaloffset;
parentEl=parentEl.offsetParent;
}
return totaloffset;
},

showhide:function(obj, e, visible, hidden){
	if (this.ie || this.firefox)
		this.dropmenuobj.style.left=this.dropmenuobj.style.top="-1000px"
	if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover")
		obj.visibility=visible
	else if (e.type=="click")
		obj.visibility=hidden
},

iecompattest:function(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
},

clearbrowseredge:function(obj, whichedge){
	var edgeoffset=0
	if (whichedge=="rightedge"){
		var windowedge=document.all && !window.opera? this.standardbody.scrollLeft+this.standardbody.clientWidth : window.pageXOffset+window.innerWidth
		var dropmenuW=this.dropmenuobj.offsetWidth
		if (windowedge-this.dropmenuobj.x < dropmenuW)  //move menu to the left?
			edgeoffset=dropmenuW-obj.offsetWidth
	}
	else{
		var topedge=document.all && !window.opera? this.standardbody.scrollTop : window.pageYOffset
		var windowedge=document.all && !window.opera? this.standardbody.scrollTop+this.standardbody.clientHeight : window.pageYOffset+window.innerHeight
		var dropmenuH=this.dropmenuobj._trueheight
		if (windowedge-this.dropmenuobj.y < dropmenuH){ //move up?
			edgeoffset=dropmenuH+obj.offsetHeight
			if ((this.dropmenuobj.y-topedge)<dropmenuH) //up no good either?
				edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
		}
	}
	return edgeoffset
},

dropit:function(obj, e, dropmenuID){
	if (this.dropmenuobj!=null) //hide previous menu
		this.dropmenuobj.style.visibility="hidden"
	this.clearhidemenu()
	if (this.ie||this.firefox){
		obj.onmouseout=function(){cssdropdown.delayhidemenu()}
		this.dropmenuobj=document.getElementById(dropmenuID)
		this.dropmenuobj.onmouseover=function(){cssdropdown.clearhidemenu()}
		this.dropmenuobj.onmouseout=function(){cssdropdown.dynamichide(e)}
		this.dropmenuobj.onclick=function(){cssdropdown.delayhidemenu()}
		this.showhide(this.dropmenuobj.style, e, "visible", "hidden")
		this.dropmenuobj.x=this.getposOffset(obj, "left")
		this.dropmenuobj.y=this.getposOffset(obj, "top")
		this.dropmenuobj.style.left=this.dropmenuobj.x-this.clearbrowseredge(obj, "rightedge")+"px"
		this.dropmenuobj.style.top=this.dropmenuobj.y-this.clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+1+"px"
	}
},


contains_firefox:function(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
},

dynamichide:function(e){
var evtobj=window.event? window.event : e
if (this.ie&&!this.dropmenuobj.contains(evtobj.toElement))
this.delayhidemenu()
else if (this.firefox&&e.currentTarget!= evtobj.relatedTarget&& !this.contains_firefox(evtobj.currentTarget, evtobj.relatedTarget))
this.delayhidemenu()
},

delayhidemenu:function(){
this.delayhide=setTimeout("cssdropdown.dropmenuobj.style.visibility='hidden'",this.disappeardelay)
},

clearhidemenu:function(){
if (this.delayhide!="undefined")
clearTimeout(this.delayhide)
}
}