No need to make it so complicated, sometimes the simpler is better.
var global_boolean:Bolean;
button1, button2... buttonN.addEventListener(MouseEvent.CLICK, onButtonClick);
function onButtonClick(e:MouseEvent):void
{
if (global_boolean) return;
global_boolean = true;
// bla bla bla do whatever you want bla bla bla //
}
Need explanation?
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