oh and randomF is a function used to generate a random number.
PHP Code:
private function randomF(lowVal:int, highVal:int):int //A function used to generate a random number
        {
            if (lowVal <= highVal)
            {
                return(lowVal + Math.floor(Math.random() * (highVal - lowVal + 1 )));
            } else {
                throw(new Error("Fail. Wrong values passed to randomF"));
            }
        }