<!--[if lt IE 7]>
               function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.
               {
                  var arVersion = navigator.appVersion.split("MSIE")
                  var version = parseFloat(arVersion[1])
                  if ((version >= 5.5) && (document.body.filters)) 
                  {
                         for(var i=0; i<document.images.length; i++)
                         {
                                var img = document.images[i]
                                var imgName = img.src.toUpperCase()
                                if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
                                {
                                      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);
<!--[endif]--> 