A disabled button should not receive and should not fire onclick mouse events.

Steps to reproduce: click the disabled button below.

Expected results: nothing should happen after clicking the disabled button.

Reference: disabled: When set for a form control, this boolean attribute disables the control for user input. (...) it cannot receive user input
coming from HTML 4.01, section 17.12.1 Disabled controls

This bug has been reported at connect's IE beta feedback as bug 333934.

Update: This bug has been FIXED in Internet Explorer 8 beta 2 (build 6001.18241) released on August 28th 2008. Otherwise, Internet Explorer 8 beta 2 PASSES this specific and particular testcase.

Valid HTML 4.01!