function initPage()
{
	var navRoot = document.getElementById("mainnav");
	var lis = navRoot.getElementsByTagName("li");
	for (var i=0; i<lis.length; i++)
	{
		lis[i].onmouseover = function(){
			if(this.parentNode.parentNode.parentNode.id.indexOf("mainnav") !=-1){
				this.parentNode.parentNode.getElementsByTagName("a")[0].className += "drop-link";
			}
			this.className += " hover";
		}
		lis[i].onmouseout = function()
		{
			this.className = this.className.replace("hover", "");
			if(this.parentNode.parentNode.parentNode.id.indexOf("mainnav") !=-1){
				this.parentNode.parentNode.getElementsByTagName("a")[0].className =this.parentNode.parentNode.getElementsByTagName("a")[0].className.replace("drop-link", "");
			}
		}
	}
}

if (window.addEventListener){
	window.addEventListener("load", initPage, false);
}
else if (window.attachEvent){
	window.attachEvent("onload", initPage);
}