function smoothChange(theImage, theSource)
{
  if(document.all&&!window.opera) 
  {
    theImage.style.filter="blendTrans(duration=0.5)";
    theImage.filters.blendTrans.apply();
    theImage.src = theSource.src;
    theImage.filters.blendTrans.play();
  }
  else
  {
      theImage.src = theSource.src;
  }
}