Problem description:This afternoon I ran into a hassle: IE7 and IE8 intercept navigateToURL('xxx','_blank') inside Flash; getURL under AS2 gets intercepted the same way. I feel like I’ve run into this before, but it doesn’t happen that often, so I never bothered to dig into what conditions trigger the interception. It came up again today, so it’s a good chance to figure out why. After some searching, I found plenty of discussions from last year. Someone pointed out: IE7 and Firefox (the version I’m using is 2.0.0.11) block opening new windows with the navigateToURL method, while the getURL method in AS2 doesn’t — which is pretty annoying. Since the project chose AS3, we just have to find a way around it. The first thing that comes to mind is ExternalInterface, of course, but testing showed it still gets blocked. Then I wondered whether adding wmode would help, so I added the wmode attribute set to opaque to the page — and sure enough, it worked.