Alignment problem

I have put a graphic on the left hand side of the page, but when viewed on a different size screen, the graphic has moved into the page rather than staying on the edge. I had a search through topics but have not found anything, so I expect I have missed something obvious.

http://www.tropicalwebdesign.com.au/drafts/driving/

Web Designer does not do left aligned website pages. All site pages are centre aligned.
However, there is a script in the TweakSet (not officially supported) which might help you (tweak name: left aligned page.xar).