flash back button

wheres me jumpa

hey guys,

posted this in the webmaster forum and havent got a response, just thought somebody here might be able to help.

working on a flash project and i want to include a back button on some frames. the back button wont always be just going to the previous frame so the prevFrame option is out. also in this particular movie, i can reach one frame from a various different frames so i cant just use gotoandplay.

i found a script that works like this..

imclude this on the opening frame,

navStack = [];

and this on every frame after,

navStack.push(_currentFrame);

the back button is then coded like this,

on (release) {
if (_root.navStack.length > 1) {
recentFrame = _root.navStack.pop();
previousFrame = _root.navStack.pop();
goToAndPlay(previousFrame);
}
}

when i use this i get no errors but the back button doesnt do anything. anyone got any clues? or even a script that can do it?

wheres me jumpa

im using flash.