How do I get javascript window.open inside htmlloader to work?

I Have an air app, which I'm building with Flash CS5, which loads my site through the Htmlloader class. My problem lies with the tweet buttons on my site. They use the window.open class in javascript to open in a new smaller window, but I just can't get it to work inside my app. Is there a way to do this, or if not a work around to make something like this work?