function chgSt(lnk, mode, elem) {
	
	if (document.getElementById) {
		   if (mode == 0) {
			      document.getElementById(elem).style.backgroundColor = "#cccccc";
			      lnk.className = "navleftover";
		   } else if (mode == 1) {
			      document.getElementById(elem).style.backgroundColor = "";
			      lnk.className = "navleft";
		   } else if (mode == 2) {
			      document.getElementById(elem).style.backgroundColor = "#666666";
			      lnk.className = "linkActSub";
		   } else if (mode == 3) {
			      document.getElementById(elem).style.backgroundColor = "#fff8b4";
			      lnk.className = "linkInActSub";
	    }
	 } 
}