function getposOffset(what, offsettype){
	var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
	var parentEl=what.parentNode;
	var offParent=what.offsetParent;
	while (parentEl!=null && (!parentEl.style || !parentEl.style.position || parentEl.style.position != "relative")){
		if(offParent == parentEl){
			totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
			offParent = offParent.offsetParent
		}
		parentEl=parentEl.parentNode;
	}
	return totaloffset;
}


function showhide(obj, e, visible, hidden, menuwidth) {
	
	if (ie4 || ns6) {
		dropmenuobj.style.left=dropmenuobj.style.top="-500px";
	}
	if (menuwidth != "") {
		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 < 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 up?
				edgeoffset = dropmenuobj.contentmeasure+obj.offsetHeight;
			if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) {//up no good either?
				edgeoffset = dropmenuobj.y+obj.offsetHeight-topedge;
			}
		}
	}
	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") + "px";
		dropmenuobj.style.top = dropmenuobj.y-clearbrowseredge(obj, "bottomedge") + obj.offsetHeight+"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);
	}
}