function changePic(PicName) {
  obj = document.getElementById(PicName);
  sPic = obj.src;

  document.Pic1.style.filter="blendTrans(duration=2)";
  document.Pic1.style.filter="blendTrans(duration=3)";
  document.Pic1.filters.blendTrans.Apply();

  pic1 = document.Pic1.src;

  picTmp = pic1;
  document.Pic1.src = sPic;
  obj.src = picTmp;

  document.Pic1.filters.blendTrans.Play();
}