if(navigator.appName=='Microsoft Internet Explorer'){
    var i=0;
    while(document.images[i]){
      var pos=document.images[i].src.length-3;
      var ext=document.images[i].src.substr(pos);
//      alert(ext);
      if(ext=="png"){
//        alert(ext)
        document.images[i].style.width=document.images[i].width;
        document.images[i].style.height=document.images[i].height;
        document.images[i].style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+document.images[i].src+"', sizingMethod='scale')";
        document.images[i].src="gfx/blank.gif";
//      document.images[i].style.filter="alpha(opacity=60)";
      }
      i++;
    }
  }