function returnObjById( id )
{
    if (document.getElementById)
        var returnVar = document.getElementById(id);
    else if (document.all)
        var returnVar = document.all[id];
    else if (document.layers)
        var returnVar = document.layers[id];
    return returnVar;
}

function init ()
{
		var menu = returnObjById("menu");
			menu.childElements().each(function(node){
			var submenu = node.childElements()[1];
			
			Element.extend(submenu).setStyle({display: 'none'});
				node.onmouseover = node.onmouseout = function()
				{
						Element.toggle(submenu);
				}
			
			}
		);
}