// ---------------------------------------------------

 function newImage(arg)
 {
   if (document.images)
   {
     rslt = new Image();
     rslt.src = arg;
     return rslt;
   }
 }

// ---------------------------------------------------

function changeImages(sId, sSrc)
{
  if (document.images)
  {
    document.getElementById(sId).src = sSrc;
  }
}