var disappeardelay = 250;  //menu disappear speed onMouseout (in miliseconds)
var enableanchorlink = 0; //Enable or disable the anchor link when clicked on? (1=e, 0=d)
var hidemenu_onclick = 1; //hide menu when user clicks within menu? (1=yes, 0=no)


var ie5 = document.all
var ns6 = document.getElementById&&!document.all

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 (ie5||ns6)
		dropmenuobj.style.left=dropmenuobj.style.top = -500;
	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 = ie5 && ((!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 windowedge = ie5 && ( !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;
	}
	return edgeoffset;
}

function dropdownmenu(obj, e, dropmenuID)
{
	if( window.event )
		event.cancelBubble = true;
	else if( e.stopPropagation )
		e.stopPropagation();
	if( typeof dropmenuobj != "undefined" ) //hide previous menu
		dropmenuobj.style.visibility = "hidden";
	clearhidemenu();
	if( ie5 || ns6 )
	{
		obj.onmouseout = delayhidemenu;
		dropmenuobj = document.getElementById( dropmenuID );
		if( hidemenu_onclick )
			dropmenuobj.onclick = function(){dropmenuobj.style.visibility='hidden'};
		dropmenuobj.onmouseover = clearhidemenu;
		dropmenuobj.onmouseout = ie5? function(){ dynamichide(event)} : function(event){ dynamichide(event)};
		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(( ie5||ns6 ) && !enableanchorlink )
		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( ie5 && !dropmenuobj.contains( e.toElement ))
	{
		delayhidemenu();
	}
	else if( ns6&&e.currentTarget != e.relatedTarget && !contains_ns6( e.currentTarget, e.relatedTarget ))
	{
		delayhidemenu();
	}
}

function delayhidemenu()
{
	delayhide = setTimeout( "dropmenuobj.style.visibility = 'hidden'", disappeardelay );
}

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