<!--

  if (document.images)
   {	
     nav1on= new Image(310,60);
     nav1on.src="images/nav1-over.jpg";

     nav2on= new Image(150,60);
     nav2on.src="images/nav2-over.jpg";

     nav3on= new Image(310,60);
     nav3on.src="images/nav3-over.jpg";


     nav1off= new Image(310,60);
     nav1off.src="images/nav1-up.jpg";

     nav2off= new Image(150,60);
     nav2off.src="images/nav2-up.jpg";

     nav3off= new Image(310,60);
     nav3off.src="images/nav3-up.jpg";

}

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

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

//-->