function alphaImages() {
  var els = document.getElementsByTagName("IMG");
    var s, w, h;
      for (var i=0; i<els.length; i++) {
          s = els[i].src;
          if (s.toLowerCase().indexOf(".png") != -1) {
            els[i].src = "images/elemek/blank.gif";
            els[i].style.filter += "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + s + "', sizingMethod=image);";
      }
    }
  }
if (navigator.userAgent.indexOf("MSIE") != -1 && navigator.userAgent.indexOf("Windows") != -1)
    window.attachEvent("onload", alphaImages);