function startList() 
{
	if (document.all && document.getElementById)
	{
		var navRoot = document.getElementById('categories');
		for (i=0; i < navRoot.childNodes.length; i++)
		{
			var node = navRoot.childNodes[i];
			if (node.nodeName == "LI")
			{
				node.onmouseover = function() {	this.className += " over"; }
				node.onmouseout = function() { this.className = this.className.replace(" over", ""); }
			}
		}
	}
}