JavaScript Pop up issues in IE 7.0

I’ve been using a java script popup method similar to the one shown here:

http://www.kirupa.com/developer/flash8/centered_popup_window.htm

The only real variation from this that I can think of worth mentioning is that the pop up comes from another imbedded swf file. The main swf works as a place holder that loads the second swf containing the pop up button, the javascript that goes in the html is in the correct page… and I’ve gone over this thing with a fine tooth comb racking my brains to figure out why but it will not pop up in IE7… I havent even tried it in older versions of IE but I doubt it works there either.

It works fine in Firefox though… flawlessly.

But in Internet Explorer 7 nothing… I’ve tried adding it to trusted sites, I’ve made absolutely sure that all pop up blocking features are shut off… but when I click the menu at the top and load that second swf with the button wired for the pop up it does nothing… the browser displays a yellow java error road sign at the bottom and will not display the pop up.

Does anyone here know of the perils of IE7?