if (document.images)
   {
	 
     flashOn= new Image(47,19);
     flashOn.src="_images/flashOn.gif"; 
     
     QTOn= new Image(80,19);
     QTOn.src="_images/QTOn.gif";


     
     flashOff= new Image(47,19);
     flashOff.src="_images/flashOff.gif";
     
     QTOff= new Image(80,19);
     QTOff.src="_images/QTOff.gif";
     
     
   }

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;
    }
 }