// thanks to alistapart :)
startList = function()
{
    if (document.all&&document.getElementById)
    {
        navRoot = document.getElementById("submenu");
        if(navRoot)
        {
            for (i=0; i<navRoot.childNodes.length; i++)
            {
                node = navRoot.childNodes[i];
                if (node.nodeName=="LI")
                {
                    node.onmouseover=function()
                    {
                        this.className+=" over";
                    }
                    node.onmouseout=function()
                    {
                        this.className=this.className.replace(" over", "");
                    }
                }
            }
        }
        
        navRoot = document.getElementById("article_menu");
        if(navRoot)
        {
            for (i=0; i<navRoot.childNodes.length; i++)
            {
                node = navRoot.childNodes[i];
                if (node.nodeName=="LI")
                {
                    node.onmouseover=function()
                    {
                        this.className+=" over";
                    }
                    node.onmouseout=function()
                    {
                        this.className=this.className.replace(" over", "");
                    }
                }
            }
        }
    }
}

window.onload=startList;