Simple scroll problem (hmtl)

soz if ive put this thread on the wrong forum.

Im workin on a site which contains a top and main frame.

When the mainFrame needs to scroll downwards because of the amount of content, it shows the scroller going from left to right aswell as the up/down scroller.

Is there away i can get rid of the scroller from left to right, theres no need for it to be there.

hope thats clear,