cwHover = function() 
{
  var elems = document.getElementById("menu").getElementsByTagName("li");

	for(var i = 0; i < elems.length; i++) 
	{
		elems[i].onmouseover = function() 
		{
			this.className += " cw_hover";
		}

		elems[i].onmouseout = function() 
		{
			setTimeout(this.className = this.className.replace(new RegExp(" cw_hover\\b"), ""), 2000);
		}
		
	}
}

if(window.attachEvent)
  window.attachEvent("onload", cwHover);