PNG Transparency for Internet Explorer

Ever wanted to allow your users to see transparent PNG images using Internet Explorer? Now you can!

[high]Note:[/high] I did NOT create this script, it remains the sole property of it's author.


Pros & Cons

Pros:

• Ignored as a comment in other browsers, so no browser-sniffing code is required
• Works with (X)HTML Strict & Transitional Doctypes
• Does not break W3C validation
• Lightweight and very easily deployed
• Works with existing in-line or external CSS rules based on class or ID selectors
• Works with old-style img align="left" or align="right" attributes
• Adds itself to the end of any existing Body Onload code
• Works with imagemaps and input images using a special version

Cons:

• Doesn't work in IE versions earlier than 5.5
• Requires JavaScript to be enabled - the estimations for how many people choose not to use JS vary wildly.
• CSS backround PNGs not supported - experimentation revealed I could traverse the Stylesheets collection and use the AlphaImageLoader trick to replace all background-image attributes containing PNGs, but then background-repeat would not work, and anchors placed over non-transparent parts of the image were not clickable :-(
• CSS rules for the PNG images based on the img selector are lost, but this is easily rectified by adding a class selector to your img rule such that img{..} becomes img,.png{..} - then add the attribute class="png" to each of your PNGs.

To install, simply upload the attached .js file to your /forums/clientscript/ directory.

Then edit your headinclude template, and add the following:

<!--[if lt IE 7.]>
<script defer type="text/javascript" src="clientscript/vbulletin_pngfix.js?v=$vboptions[simpleversion]"></script>
<![endif]-->

You're all set.!
Note: Updated to reflect changes by the author, and 3.5.x javascript handling changes. This template modification works fine with 3.6.x as it is, and therefore won't be posted in the 3.6.x forum!

[Ultima07]

haha this is just what i needed http://www.tamilultima.com

[Defkalion]

Great hack, works like a charm in 3.6.8

Many thanks to the author and the thread starter

[argus]

Works great in 3.6.8 PL2. Thank you for sharing.

[GoodKarmaKid]

Does this work with vb 3.7 RC1 ??

[Selene]

I merged the xml into my style
uploaded the pics to the right path in images editor

and the icons are not showing up? So what is it I have done wrong? : )

[Wayne Luke]

Originally Posted by GoodKarmaKid

Does this work with vb 3.7 RC1 ??

It should work in all versions of 3.7.0.

[Wayne Luke]

Originally Posted by Selene

I merged the xml into my style
uploaded the pics to the right path in images editor

and the icons are not showing up? So what is it I have done wrong? : )

Can't really tell.. Do you have a screenshot of the problem?

[Super Jinni]

ok, I tried it just now, but it didn't work for me

even after doing hard refresh

[Masiello]

Thanks, in combination with the Wayne editor it works perfect on my 3.7.3 PL1 board

[bleros]

good job mann