var functionRef = function topnavActive()
{
debugger;
	var topnav = document.getElementById(revize_menus_leftnav);
	var pattern = new RegExp("http[s]?://.*?/(.*)[?#]?","");
	if (topnav)
	{
		var tags = topnav.getElementsByTagName("a");
		if (tags)
		{
			for (var i=0;i<tags.length;i++)
			{
				var el = tags[i];
				var resultsTag = el.href.match(pattern);
				var resultsPage = location.href.match(pattern);
				if (!resultsTag || !resultsPage) continue;
				if (resultsTag[1] != resultsPage[1]) continue;

				// go up li tree marking this and all parent class=active
				var li = el.parentNode;
				while (li)
				{
					li.className += ' active';
					var ul = li.parentNode;
					if (!ul) break;
					li = ul.parentNode;
					if (!li) break;
				}
			}
		}
	}
}
if (addEventListener) addEventListener('load', functionRef, false);		//standards browser
else if (attachEvent) attachEvent("onload", functionRef);				//IE early versions