Flash Close button and links in Flash not working in Firefox

Hello,
I am very new to Flash and actually our graphic designer created this small flash timeline here:
http://www.cerner.com/firsthand/Firs....aspx?id=32965

For some reason when I test it in Firefox the Close button and the links do not work. Also I know of one person who has the same issue in IE. Most others using IE have no problem what so ever. The actionscript for the close button is:

Actionscript Code:

close_96.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndPlayFromFrame_4);

function fl_ClickToGoToAndPlayFromFrame_4(event:MouseEvent):void
{
    gotoAndPlay(1);
}

The actionscript for the links are:

Actionscript Code:

golf_pics.addEventListener(MouseEvent.CLICK, fl_ClickToGoToWebPage_14);

function fl_ClickToGoToWebPage_14(event:MouseEvent):void
{
    navigateToURL(new URLRequest("http://www.wheatphotography.com/firsthand/"), "_blank");
}

Any help is greatly appreciated. I just don't get why they dont work in Firefox. Maybe some sort of security setting?
Thanks,
Shaun