enable_dropdowns = function(){
	if (document.all&&document.getElementById){
		navRoot = document.getElementById("navbar_menu");
		if (navRoot) {
			for(i=0; i<navRoot.childNodes.length; i++){
				node = navRoot.childNodes[i];
				if(node.nodeName=="LI"){
					node.onmouseover=function(){
						this.className+=" hover";
					}
					node.onmouseout=function(){
						this.className=this.className.replace(" hover", "");
					}
				}
			}
		}
	}
}
window.onload=enable_dropdowns;