function setNavSelect(navid, class_selected, class_not_selected)
    {
		var container = document.getElementById(navid);
		var links = container.getElementsByTagName('a');
		var links_len = links.length;

        for(i = 0; i < links_len; i++)
        {
            var str = links[i].href;
            var new_str = str.match(page);

            if(new_str != null && new_str != "")
            {
                if(links[i].className == undefined)
                {
                    links[i].className = class_selected;
                }   
                else
                {
                    var tmp_class = links[i].className;
                    links[i].className = tmp_class + " " + class_selected;
                }
            }   
            else
            {
                if(links[i].className == undefined)
                    links[i].className = class_not_selected;
                else    
                {
                    var tmp_class = links[i].className;
                    links[i].className = tmp_class + " " + class_not_selected;
                }
            }
        }
    }