Firefox Browser Usage and Support Forum

I have a very strange behaviour in FireFox. I use FF 1.0.
The URL is <sorry, no example URLs - please see Terms of Service [webmasterworld.com]>

When I make the browser to a smaller size, scroll bar appears which is normal.

If i click the scroll bar or drag the mouse with scroll bar and leave it, It goes back to the top. However it works if i use the mouse wheel.

It works perfectly in IE n Opera.

I am breaking my head for the last couple of hrs.Its sounds simple. but I m not getting it.

I use CSS property scroll:auto in the div tags.

Please help me fix this.

Thanks in advance.
Kumanan.