MovieClip to search for the frame label in.
            @param label: The name of the frame label.
            @return The frame number of the label or <code>-1</code> if the frame label was not found.
        */
        public static function getFrameNumberForLabel(target:MovieClip, label:String):int {
            var labels:Array = target.currentLabels;
            var l:int        = labels.length;
            
            while (l--)
                if (labels[l].name == label)
                    return