I work on a pretty large e-commerce site, and even though I like this solution,
it is impossible to use since it doesn't include Netscape users.
In a perfect world, everyone would use the same browser, or at least follow
the W3 guidelines for DOM, however, this is not the case.
Until then, I will have to use a simpler version of tabs, that is to re-send
variables for each tab and reload the page...