var menuwidth = "150px"; //default menu width
var menubgcolor = "#EFF0E0";  //menu bgcolor
var disappeardelay = 250;  //menu disappear speed onMouseout (in miliseconds)
var hidemenu_onclick = "yes"; //hide menu when user clicks within menu?

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

if (ie4 || ns6) {
	document.write('<div class="navigation" id="dropmenudiv" style="position:absolute;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 = "-500px"
	}
	if (menuwidth != "") {
		dropmenuobj.style.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() {
	return !(ie4 || ns6);
}

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)
	}
}

if (hidemenu_onclick == "yes") {
	document.onclick = hidemenu
}