function updateNavStatus() {
var currentPage = document.URL;
var start = currentPage.lastIndexOf('/');
var end = currentPage.lastIndexOf('.');
	if(start > -1) { 
		currentPage = currentPage.substr(start+1,end-start-1); // remove trailing stuff.
		var currentNav = "nav_" + currentPage;
		obj = document.getElementById(currentNav);
		if (obj != "") {
			obj.setAttribute("class", "reNavOn");
			obj.setAttribute("className", "reNavOn");
		}
	}
}