IE help with iFrame

Hello there… on our site (http://www.cnatraining.com/schools) we have an iFrame that is not playing well with IE. In all other (common) browsers, the iFrame appears centered nicely on the page. In IE, it is off-center to the right.
I cannot figure out what in the heck I am missing (or calling incorrectly).

Any ideas here? Thanks, in advance.

Ben

The gap is apparent here in IE9 but not 7 & 8. Others may be able to explain why this affects 9 alone, but a fix would be to add overflow:hidden; to #results_iframe

#results_iframe {
    overflow: hidden;
}

Hey, Vic, thanks!

I didn’t think something that easy would do the trick, but indeed it did. Bravo!!

Still open to any explanation as to why IE9 doesn’t take the same code that 7 or 8 does. Anyone?