Was just working on interface of my application last night, and had to make few changes for background of buttons. I used background-image CSS property for setting the images for my buttons, everything looked fine untill I tried to access the application on Windows XP. Oh ! no background is displayed on XP.
Interestingly its a known Bug in Internet Explorer 6.0 which uses windows XP themes to render its controls, now thre are a couple of solutions to this, one is to use background istead of background-image and other is to include this
<meta http-equiv=”msthemecompatible” content=”no”>
to disable XP themes on the page.