I've build some CSS mouseovers using the sprite method and wanted to have a 'down' pic as well as hover and off.

Building a test page, I disocvered that IE seems very buggy with regard to a:active CSS (unless I'm missing something)

here's the demo page:

http://www.buildyourown.org.uk/test.htm

Clicking the third 'key' icon and holding the mouse button down should turn the key upside down while the mouse button is down. Works fine in Firefox and Opera but only about 50% (randomly) of the time in IE6?