myspace is a coding nightmare. The problem will always be with IE, too, since you probably used IE to initially mark it up. Your page doesn't have a doctype, normal for myspace, but this puts IE into 'quirks mode' and it will never attempt to act like more modern browsers, like Firefox or anything else.
To get your page to work correctly in all the modern browsers, it's always best to use them to initially design and test your page. Then look to see if IE stumbles into doing something correctly. It would be easier to fix old, clunky, inept IE rather than trying to make bad code work in the better browsers.
But myspace is still a coding nightmare. For example, your page has 297 html errors
alone. And 96 CSS errors.
Now all that from a very simple page that could be done in under 100 lines of markup yet yours has something over a thousand.