var disappeardelay=750;
var min_width=100;

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) {
	if (ie4||ns6) dropmenuobj.style.left=dropmenuobj.style.top="-500px";
/* 
	var w=dropmenuobj.offsetWidth;
	if(w<min_width) {
		dropmenuobj.style.width=min_width+"px";
	} else {
		dropmenuobj.style.width="auto";
	}
*/


	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) {
			edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight; //move up?
			if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge; //up no good either?
		}
	}
	return edgeoffset;
}

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


function dd_menu(obj, e, menucontents) {
	obj.onmouseout=delayhidemenu;

	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");
		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);
}