PNG transparency in IE

Posted by Planeta Srbija | 7.11.08 | , | 1 comments »

If you want PNG pictures to have transparency on your web page, use this simple method:

1) Copy this code and paste it into yout notepad:

/*

Correctly handle PNG transparency in Win IE 5.5 & 6.
http://homepage.ntlworld.com/bobosola. Updated 18-Jan-2006.

Use in <HEAD> with DEFER keyword wrapped in conditional comments:
<!--[if lt IE 7]>
<script defer type="text/javascript" src="png.js"></script>
<![endif]-->

*/

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
}
}
}



2)Save this file as: png.js and put it somwhere on your website. For example in root.

3) Put on each page of your website which should show transparent PNGs somewhere within <head> section this code:

<!--[if lt IE 7.]>
<script defer type="text/javascript" src="png.js"></script>
<![endif]-->

1 comments

  1. Sneha Gupta // 2 January 2009 at 13:42  

    I have to say that I love this article. I have searched for many weeks to find an article about this topic. This blog has been so simple and has a lot more features than other blog articles. The layout and design is great.

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