function $( v ) { return document.getElementById( v ); }
//µ¼º½²Ëµ¥
var isOverMainMenu = false;
var isOverSortMenu = false;
function showMenu(id)
{
	var a = document.getElementById("MainMenu").getElementsByTagName("a");
	for(var i=0;i<a.length;i++)
	{
		a[i].onmouseover = function()
		{
			if(this.className!="active") this.className = "hover";
			showSortMenu(this.id);
			isOverMainMenu=true;
		}
		a[i].onmouseout = function() 
		{
			if(this.className!="active") this.className = "";
			setTimeout("showSortMenu('"+id+"')", 400);
			isOverMainMenu=false;
		}
		if(a[i].id == id)
		{
			a[i].parentNode.className = "active";
			showSortMenu(id);
		} else 
		{
			a[i].parentNode.className = "";
		}
	}
}
function showSortMenu(id)
{
	var a = document.getElementById("SortMenu");
	a.onmouseover = function()
	{
		isOverSortMenu=true;
	}
	a.onmouseout = function()
	{
		isOverSortMenu=false;
	}
	if(!isOverSortMenu && !isOverMainMenu)
	{
		var b = document.getElementById("SortMenu").getElementsByTagName("ul"); 
		for(var i=0;i<b.length;i++)
		{
			if(b[i].id == "SortMenu_"+id)
			{
				b[i].className = "active";
			} else
			{
				b[i].className = "";
			}
		}
	}
}