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Simple IE 5.5 and IE 6 PNGFIX

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I've been using this little gem of a snippet for a few years, and it's never failed me.

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

URL: http://homepage.ntlworld.com/bobosola

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