function correctPNG() // correctly handle PNG transparency in Win IE 5.5 or higher.
{
  for(var i=0; i<document.images.length; i++)
  {
    var img = document.images[i]
      var imgName = img.src.toUpperCase()
      if (imgName.indexOf('.PNG') > 0 && !img.id.match(/^OpenLayers/))
      {
        var imgID = (img.id) ? "id='" + img.id + "' " : ""
          var imgClass = (img.className) ? "class='" + img.className + "' " : ""
          var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
          var imgStyle = "display:inline-block;" + img.style.cssText 
          if (img.align == "left") imgStyle = "float:left;" + imgStyle
            if (img.align == "right") imgStyle = "float:right;" + imgStyle
              if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle   
                var strNewHTML = "<span " + imgID + imgClass + imgTitle
                  + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
                  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
                  + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>" 
                  img.outerHTML = strNewHTML
                  i = i-1
      }
  }
}
window.attachEvent("onload", correctPNG);