/ Published in: CSS
The code below will change the background-color of divs depending on what browser the user is viewing the web page under. Since * cascades down to IE7 and below, we use _ after that declaration so that IE6 (and below) has a different background color from IE7.
URL: http://sixrevisions.com/css/10-random-css-tricks-you-might-want-to-know-about/