Can anyone see why this script will not work on Mac Safari.

Code:
import flash.net.URLRequest;

myBtn.addEventListener(MouseEvent.CLICK,doClick);

function doClick (e:MouseEvent):void 
{
var address:String = "http://www.google.com";
var jscommand:String = "window.open('" + address + "','PopUpWindow','height=600,width=600,toolbar=no,scrollbars=no,resizable=yes,left=0,top=0');";
var url:URLRequest = new URLRequest("javascript:" + jscommand + " void(0);");
navigateToURL(url,"_parent");
}
The swf that contains this script is embedded on the wordpress page as normal so I do not think I have embedded it wrong.

Does anyone have a more reliable script that works on both platforms and all browsers that they could provide.

Thanks