var current="",timer,ready = false,ie,nn,d1,op;

function popupmenu(e,id,menux,menuy){
	hidemenu();
	current = id;
	if(timer)clearTimeout(timer);
	if(ie||op)e = window.event;
	if(!menux||!menuy){
		if(ie||op){
			menux = e.clientX+document.body.scrollLeft;
			menuy = e.clientY+document.body.scrollTop;
		}
		else{
			menux = e.pageX;
			menuy = e.pageY;
		}
	}
	if(ie||d1){
		with(document.all(id)){
			style.left = menux;
			style.top = menuy;
			style.visibility = "visible";
		}
	}
	else if(nn){
		with(document.layers[id]){
			left = menux;
			top = menuy;
			visibility = "show";
		}
	}
}

var doposcheck = false;

function poscheck(e){
	if(doposcheck){
		if(ie||op)e = window.event;
		var l,t,w,h,x,y;
		if(ie||d1){
			l = document.all(current).offsetLeft;
			t = document.all(current).offsetTop;
			w = document.all(current).offsetWidth;
			h = document.all(current).offsetHeight;
			x = eval("e.clientX+"+(op&&!document.createTextNode?0:ie?"document.body.scrollLeft":"window.pageXOffset"));
			y = eval("e.clientY+"+(op&&!document.createTextNode?0:ie?"document.body.scrollTop":"window.pageYOffset"));
			if(x<l||x>l+w||y<t||y>t+h)hidemenu();
		}
		else if(nn){
			l = document.layers[current].left;
			t = document.layers[current].top;
			w = document.layers[current].document.width;
			h = document.layers[current].document.height;
			if(e.pageX<l||e.pageX>l+w||e.pageY<t||e.pageY>t+h)hidemenu();
		}
	}
}

function hidemenu(){
	if(current!=""){
		if(ie||d1)document.all(current).style.visibility = "hidden";
		else
		if(nn)document.layers[current].visibility = "hide";
		doposcheck = false;
	}
}

function hide(){
	if(!ready){
		timer = setTimeout("hide();doposcheck=true",100);return;
	}
	timer = setTimeout('if(!doposcheck){hidemenu()}',1000);
}

function initmenu(){
	ie = !!document.all;
	nn = !!document.layers;
	d1 = !!document.getElementById;
	op = !!window.opera;
	if(!ie&&d1)
	document.all = function(id){
		return document.getElementById(id);
	}
	if(!(ie||d1||nn))return;
	if(nn)document.captureEvents(Event.MOUSEMOVE);
	document.onmousemove = poscheck;
	var over = function(e){
		doposcheck = true;if(nn&&e.target.constructor!=Layer)document.routeEvent(e);
	}
	for(i=1;;i++){
		if((nn&&!document.layers["menu"+i])||(!nn&&!document.all("menu"+i)))break;
		if(nn){
			document.layers["menu"+i].captureEvents(Event.MOUSEOVER);
			document.layers["menu"+i].onmouseover = over;
		}
		else{
			document.all("menu"+i).onmouseover=over;
		}
	}
	ready = true;
}
window.onload = initmenu;