function NavRollOver(oTd) {if (!oTd.contains(event.fromElement)) {oTd.bgColor="FFBD63";}}
  function NavRollOut(oTd) {if (!oTd.contains(event.toElement)) {oTd.bgColor="113366";}}
  
{        
  // on images
  	butn1on = new Image(25,17);
	butn1on.src = "pics/logon_on.gif";

  // off images
 	butn1off = new Image(25,17);
	butn1off.src = "pics/logon.gif";
	
	         } 

function img_act(imgName) {
    imgOn = eval(imgName + "on.src");
    document [imgName].src = imgOn;       }

function img_inact(imgName) {
    imgOff = eval(imgName + "off.src");
    document [imgName].src = imgOff;      }