function initMenu()
{
	var _nav = document.getElementById("mainnav");
		if (_nav) {
			var nodes = _nav.getElementsByTagName("li");
			for (var i=0; i<nodes.length; i++) {
			nodes[i].onmouseover = function()
			{
			if (this.className.indexOf('hover') == -1)
				this.className += " hover";
			}
			nodes[i].onmouseout = function()
			{
			this.className = this.className.replace(" hover", "");
		}
	}
}
}
if (document.all && !window.opera) attachEvent("onload", initMenu);