Help needed

I want to install a Scrollable Iframe script on my site.

The thing is, that this script only scrolls Up and Down, but the page i want to be shown in the iframe is Wider than the iframe, so it have to scroll sideways instead.

And no, i cant just shrink the page size, or enlargen the iframe, since this is all part of a bigger layout

I've been messing around with it for the last 2 hours now, and im starting to pull out my hair, theres just noway in hell i can get it to scroll sideways...

So i turn to you guys, any help you can give me is highly appreciated since i need this script working as mentioned...

Heres a link to a demo of the script:

http://www.dynamicdrive.com/dynamicindex17/iframescroll.htm

Thank you very much

it's easy. Just change the scrollBy(0,speed) to scrollBy(speed,0)

And that script that there is, looks awfully complicated and messy.