var disappeardelay		= 250;  
var horizontaloffset	= 2; 

var ie4 = document.all
var ns6 = document.getElementById&&!document.all

/*
if (ie4||ns6)
	document.write('<div id="dropmenudiv" style="visibility:hidden;" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')
*/

function getposOffset(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;
}


function showhide(obj, e, visible, hidden, menuwidth) {
	if (ie4||ns6)
		dropmenuobj.style.left=dropmenuobj.style.top=-500
		dropmenuobj.widthobj=dropmenuobj.style
		dropmenuobj.widthobj.width=menuwidth
	if (e.type == "click" && obj.visibility == hidden || e.type == "mouseover")
		obj.visibility	=	visible
	else if (e.type=="click")
		obj.visibility	=	hidden
}

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

function clearbrowseredge(obj, whichedge) {
	var edgeoffset = 0;
	if (whichedge=="rightedge") {
		var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
		dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
		if (windowedge-dropmenuobj.x-obj.offsetWidth < dropmenuobj.contentmeasure)
			edgeoffset=dropmenuobj.contentmeasure+obj.offsetWidth
		} else {
			var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
			var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
			dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
			if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move menu up?
				edgeoffset=dropmenuobj.contentmeasure-obj.offsetHeight
			if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either? (position at top of viewable window then)
				edgeoffset=dropmenuobj.y
		}
	}
	return edgeoffset;
}

function populatemenu(what) {
	if (ie4||ns6)
		dropmenuobj.innerHTML=what.join("")
}

function dropdownmenu(obj, e, menucontents, menuwidth) {
	if (window.event)
		event.cancelBubble=true
	else if
		(e.stopPropagation) e.stopPropagation()
	
	clearhidemenu()
	dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv
	populatemenu(menucontents)

	if (ie4||ns6) {
		showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
		dropmenuobj.x=getposOffset(obj, "left")
		dropmenuobj.y=getposOffset(obj, "top")
		dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+obj.offsetWidth+horizontaloffset+"px"
		dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+"px"
	}

	return clickreturnvalue()
}

function clickreturnvalue() {
	if (ie4||ns6) return false
		else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
	if ((b = b.parentNode) == a)
		return true;
return false;
}

function dynamichide(e) {
	if (ie4&&!dropmenuobj.contains(e.toElement))
		delayhidemenu()
	else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
		delayhidemenu()
}

function hidemenu(e) {
	if (typeof dropmenuobj!="undefined") {
		if (ie4||ns6)
			dropmenuobj.style.visibility="hidden"
	}
}

function delayhidemenu(){
	if (ie4||ns6)
		delayhide=setTimeout("hidemenu()",disappeardelay)
}

function clearhidemenu() {
	if (typeof delayhide!="undefined")
		clearTimeout(delayhide)
}