getUrl{} not working - flash CS3

I want 2 open an image in a blank window, when user clicks on the button.

I used the following coding to the button:
on (Press) {
getURL("www.domainname.com, “_blank”);
}

But the above code is not working , when i click on it.

Please kindly help me to solve this problem. Also tell me the correct coding to open an image in new window.

Please Note : I want a jpg image has to be opened in seperate browser window, when i click on the button.