MainNav = function()
{
	navRoot = document.getElementById("navigation").getElementsByTagName("ul")[0];
	for (i=0; i<navRoot.childNodes.length; i++)
	{
		node = navRoot.childNodes[i];
		if (node.nodeName=="LI")
		{
			node.onmouseover=function()
			{
				this.className+=" sfhover";
			}
			node.onmouseout=function()
			{
				this.className=this.className.replace("sfhover", "");
			}
		}
	}
}
window.onload=MainNav;