"Simple" back-button in flash (to goto previous html page)

this shouldnt be hard but i cant seem to get it to work nor find a solution. hopefully someone here can help.

i have a flash navigation menu in multiple html pages and would like to have 'back' and 'forward' buttons on it for the user to get around with (the site is opening in a window without browser buttons).

ive tried using just plain javascript

on (press, release) {
     getURL("javascript:history.go(-1)");
}

with variations on the history syntax (ie 'history.back()'). this works fine if you only want to go back one page but it will not go back any further (nor will it go forward and appears to mess up the history and crashes the browser if you try to use the alt arrow keys to browse the history). crazy.

so i tried calling to a separate function from within the .swf

function BINGO() {
 history.go(-1);
}

without any luck either. macromedia says its easy to do but doesnt go into any details on how to get it to work and im a little baffled.

thanks