function smoothChange(theImage, theSource)
{

  $("#imagen").fadeOut("slow",function(){theImage.src=theSource.src})
  $("#imagen").fadeIn("slow")
}



function smoothBGChange(theObject)
{
  if(document.all&&!window.opera) 
  {
    theObject.style.filter="blendTrans(duration=0.5)";
    theObject.filters.blendTrans.apply();
    theObject.filters.blendTrans.play();
  }
}