onload = function(){
	sID = 0;
}
function hide(){
	clearInterval(sID);
	for(var i = 1; i <= 4; i++){
		if(document.getElementById("li0" + i + "_ul") != undefined){
			$("li0" + i + "_ul").style.visibility = "hidden";
		}
	}
	clearInterval(sID);
}
Behavior.register(
	'#menu01 a',
	function(el){
		el.onmouseover = function(){
			var t = this.parentNode.childNodes;
			var tt = this.parentNode.parentNode.childNodes;

			for(var i in tt){
				if(this.parentNode != tt[i]){
					var ttt = tt[i].childNodes;
					for(var j in ttt){
						if(ttt[j].nodeName == 'UL'){
							ttt[j].style.visibility = "hidden";
						}
					}
				}
			}

			for(var i in t){
				if(t[i].nodeName == "UL" || t[i].nodeName == "ul"){
					t[i].style.visibility = "visible";
				}
			}
		}
	}
);


Behavior.register(
	'#li01_ul, #li02_ul, #li03_ul, #li04_ul, ',
	function(el){
		el.onmouseout = function(){
			clearInterval(sID);
			sID = setInterval(hide, 1000);
		}
	}
);

Behavior.start();