how to make an iframe to load after all the rest of the forum page is up

[Yellow Slider]

Users that are using ie in my forum are suffering from late page load, because we use an iframe in the forum that iframes a page from a slow server, FF users aren't suffering couse it's a smarter browser in my opinion, how can i make the page to load and afterwards the iframe?

couse now the situation is that all the page is basically stucked till the iframe will load.

thanks alot.