Pop Up Window from Flash

I’m working on an all flash website, the subject of which is a collection of short films. The flash is a parent flash with navigation that loads different flash movies into it. I want these sub menus to feature buttons which launch a pop up window that features a video clip.

I tried doing this using the getURL javascript technique. It has this script in the HTML:
<script language=“JavaScript”>
function openNewWindow(URLtoOpen, windowName, windowFeatures) {
newWindow=window.open(URLtoOpen, windowName, windowFeatures); }
I have two buttons on the same flash page, each directed to different pages. The script runs perfectly in Safari and Firefox, but in Internet Explorer for PC, only one of the buttons works. The other button makes the click noise, but does nothing. This is very frustrating.
Could someone please tell me how I could get this to work in Internet Explorer? Thanks Much!![/font]