function checkLinks()
{
	if ($("leftmenu")) {
		var menu = $("leftmenu");
		var links = menu.getElementsByTagName("a");
	
		for (var i = 0; i < links.length; i++)
		{	
			if (location.href == links[i].href)
			{
				if (links[i].getAttribute("class") == "attributi")
				{
					links[i].setAttribute("class","active");
				}
			}
		}
	}
};