CSS Disabled scrolling

Question

I came across an issue with one of our web sites:

In IE9 the page had a vertical scrollbar, but you couldn\'t use the mousewheel, arrow keys, pgup/pgdwn to scroll.

Answer 1

I use iFrame to insert the content from another page and CSS mentioned above is NOT working as expected. I have to use the parameter scrolling="no" even if I use HTML 5 Doctype