One of the things I commonly see people do when launching a link from Flash is to use the onPress method with getURL. This combination works in IE, but fails in Firefox if the domain is not explicitly allowed to launch popups.

The simple solution to overcoming blocked popups in Firefox is to use the onRelease method instead of the onPress method.

Here’s a sample SWF. You can also use the “Download FLA” link for additional reference.