Enter Site Action Script FAilure!

Hi

Im new to Flash and CS3, I have created a flash introduction to a web page and I have been having a problem with actionscripting an enter site button, I am using the following actionscripting:

function releaseHandler(e:MouseEvent){ navigateToURL(new URLRequest(“http://www.mydomain.com/index.php”), “_self”); this.addEventListener(MouseEvent.MOUSE_UP, releaseHandler); }