PNG fix IE: CSS only

Posted on 19-05-2009 | By: Amit

Category : CSS

Tags: 2D, Graphics, HTML, Internet Explorer 6, microsoft, Portable Network Graphics, Transparency

In IE6, PNG images with transparency do not show their transparent regions, so you have to use some crazy IE6 proprietary filters.

I have used the css code snippet below in my projects to achieve PNG image transparency. Place it in a css file.

^?View Code HTML

* <a class="zem_slink" title="HTML" rel="wikipedia" href="http://en.wikipedia.org/wiki/HTML">html</a> img,
* html .png{
position:relative;
behavior: expression((this.runtimeStyle.behavior="none")&amp;&amp;(this.pngSet?this.pngSet=true:(this.nodeName == "IMG" &amp;&amp; this.src.toLowerCase().indexOf('.png')&gt;-1?(this.runtimeStyle.backgroundImage = "none",
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')",
this.src = "transparent.gif"):(this.origBg = this.origBg? this.origBg :this.currentStyle.backgroundImage.toString().replace('url("','').replace('")',''),
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.origBg + "', sizingMethod='crop')",
this.runtimeStyle.backgroundImage = "none")),this.pngSet=true)
);
}

You can use conditional include for this hack code so that the good browsers do not see this.