getURL('', '_blank') not working in Firefox?

Hi,

I’m encountering a problem with the getURL function.
When I have a button with the following AS


on(release) {
	getURL("http://www.google.com", "_blank");
}

and test it within Firefox (0.9.2) then it loads within the same tab which isn’t what I want obviously. In IE it loads a new window without problems. This used to work but I after reinstalling winXP with SP2 it doesn’t work anymore :frowning:

Any ideas?