pngfix.js

   1 /*
   2
   3 Correctly handle PNG transparency in Win IE 5.5 & 6.
   4 http://homepage.ntlworld.com/bobosola. Updated 18-Jan-2006.
   5
   6 Use in <HEAD> with DEFER keyword wrapped in conditional comments:
   7 <!--[if lt IE 7]>
   8 <script defer type="text/javascript" src="pngfix.js"></script>
   9 <![endif]-->
  10
  11 */
  12
  13 var arVersion = navigator.appVersion.split("MSIE")
  14 var version = parseFloat(arVersion[1])
  15
  16 if ((version >= 5.5) && (document.body.filters))
  17 {
  18    for(var i=0; i<document.images.length; i++)
  19    {
  20       var img = document.images[i]
  21       var imgName = img.src.toUpperCase()
  22       if (imgName.substring(imgName.length-3, imgName.length) == "PNG")
  23       {
  24          var imgID = (img.id) ? "id='" + img.id + "' " : ""
  25          var imgClass = (img.className) ? "class='" + img.className + "' " : ""
  26          var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' "
  27          var imgStyle = "display:inline-block;" + img.style.cssText
  28          if (img.align == "left") imgStyle = "float:left;" + imgStyle
  29          if (img.align == "right") imgStyle = "float:right;" + imgStyle
  30          if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle
  31          var strNewHTML = "<span " + imgID + imgClass + imgTitle
  32          + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";"
  33          + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
  34          + "(src=\'" + img.src + "\', sizingMethod='scale');\"></span>"
  35          img.outerHTML = strNewHTML
  36          i = i-1
  37       }
  38    }
  39 }