menusys_hover = function() {
	var mEls = document.getElementById("menusys_css").getElementsByTagName("li");
	for (var i=0; i<mEls.length; ++i) {
		mEls[i].onmouseover=function() {
			clearTimeout(this.timer);
			if(this.className.indexOf("hover") == -1)
				this.className+="hover";
		}
		mEls[i].onmouseout=function() {
			this.timer = setTimeout(menusys_out.bind(this), 50);
		}
	}
}
function menusys_out() {
	clearTimeout(this.timer);
	this.className=this.className.replace(new RegExp("hover\\b"), "");
}
if (window.attachEvent) window.attachEvent("onload", menusys_hover);