//Chrome Drop Down Menu- Author: Dynamic Drive (http://www.dynamicdrive.com)
//Last updated: Jan 1st, 06'

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

//No need to edit beyond here////////////////////////
	menuOK:			false,
	dropmenuobj:	null, 
	ie:				document.all, 
	firefox:		document.getElementById && !document.all,
	w3dom:			document.getElementById,

	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;
			parentEl=parentEl.offsetParent;
		}
		return totaloffset;
	},

	showhide: function(obj, e, visible, hidden) {
		if (this.ie || this.firefox)
			this.dropmenuobj.style.left=this.dropmenuobj.style.top="-500px"
		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=this.ie && !window.opera? this.iecompattest().scrollLeft+this.iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
			this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetWidth
			if (windowedge-this.dropmenuobj.x < this.dropmenuobj.contentmeasure)  //move menu to the left?
				edgeoffset=this.dropmenuobj.contentmeasure-obj.offsetWidth
		} else {
			var topedge=this.ie && !window.opera? this.iecompattest().scrollTop : window.pageYOffset
			var windowedge=this.ie && !window.opera? 			this.iecompattest().scrollTop+this.iecompattest().clientHeight-15 : 	window.pageYOffset+window.innerHeight-18
			this.dropmenuobj.contentmeasure=this.dropmenuobj.offsetHeight
			if (windowedge-this.dropmenuobj.y < this.dropmenuobj.contentmeasure) { //move up?
				edgeoffset=this.dropmenuobj.contentmeasure+obj.offsetHeight
				if ((this.dropmenuobj.y-topedge)<this.dropmenuobj.contentmeasure) //up no good either?
			edgeoffset=this.dropmenuobj.y+obj.offsetHeight-topedge
			}
		}
		return edgeoffset
	},

	dropit:function(obj, e, dropmenuID) {
		if (!this.menuOK) return;
		if (this.dropmenuobj != null) //hide previous menu
			this.dropmenuobj.style.visibility="hidden"
		this.clearhidemenu()
		if (this.ie||this.firefox||ths.w3dom) {
			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)
	}
}

function menuinit() {
	if (document.getElementById) {
		document.getElementById("chromemenu").className = "menubar";
//		document.getElementById("chromemenu").setAttribute("class","menubar");
		cssdropdown.menuOK = true;
	} else if (document.all) {
		document.all["charomemenu"].className = "menubar";
		cssdropdown.menuOK = true;
	}
}

if (window.addEventListener) { // W3C event model
	window.addEventListener("load",menuinit,false);
} else if (window.attachEvent) { //  IE
	window.attachEvent("onload",menuinit);
} else if (window.onload != null) {
    var oldOnload = window.onload;
    	window.onload = function ( e ) {
      	oldOnload( e );
       	menuinit();
      };
} else {
      window.onload = menuinit;
}