Full screen page tutorial

im having a weird problem after following this tutorial:

i published the swf and html according to the directions and it looked and worked fine when i tested it within flash and via the html page. i then transferred the files to a second computer and uploaded them to the server. now when i view the pages via IE im getting a margin at the bottom that causes the scroll bar to appear (seen here: http://www.skateboardspinnerrims.com).

any ideas what’s causing this?