event.button in FF

My scenario is this: When the user clicks on an element in the HTML document and then drags the mouse, I need to perform certain custom actions. Hence I need to determine what button the user has clicked. This is possible using event.button. In IE, it returns 0 when the mouse is moved, and 1 when the mouse is moved with the left button pressed.

But not so in FF. FF returns 0 when the mouse is moved, but it also returns 0 when the mouse is moved with the left button pressed.:mad: Why is this so? Is there no way to differentiate between a normal mousemove and a drag in FF?

Is there no solution to this? Or is something wrong on my side?

These should help a little:

http://dunnbypaul.net/js_mouse/

http://www.quirksmode.org/js/improt.html

http://www.faqts.com/knowledge_base/view.phtml/aid/992/fid/145

http://www.devarticles.com/c/a/JavaScript/Handling-events-with-the-DOM-Part-III/6/