// JavaScript Document

  if (document.images)
   {
     pic1on= new Image(250,136);
     pic1on.src="images/01on.png"; 
	 pic2on= new Image(250,136);
     pic2on.src="images/02on.png"; 

     pic1off= new Image(250,136);
     pic1off.src="images/01off.png";
	 pic2off= new Image(250,136);
     pic2off.src="images/02off.png";
   }

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;
    }
 }