It should be getURL() not GetUrl(). In case it isn't, 'url' should be a string variable. A new window is not a popup window, so that shouldn't be gettiong blocked as a popup.
thank you for response,
i have used correct command but not it works.
It Works, in my popup setting are setting "CUSTOM" not MEDIUM
Someone else may have a better answer, but if your browser is not allowing extra windows to be open, I don't think Flash can control/change that at all. The browser settings need to be relaxed if they can be set to be that strict.