Opening link in iframe doesn't work in Firefox

Hi all!

I’m building a website with a flash menu, and the contents are supposed to show up in an iframe.

I’m having a problem though, the link opens perfectly in IE6, but it doesn’t do anything in Firefox.

Here’s the code I used for the button:

on (release) {
    getURL("http://sparxcg.atspace.com/aboutme/general.html", "frame");
}

“frame” is the name of my iframe.

Any ideas? My friend told me that Firefox has a few problems with iframes, but there are solutions to this…