PhpCaptcha::DrawLines PHP Method

    function DrawLines()
    {
        for ($i = 0; $i < $this->iNumLines; $i++) {
            // allocate colour
            if ($this->bUseColour) {
                $iLineColour = imagecolorallocate($this->oImage, rand(100, 250), rand(100, 250), rand(100, 250));
            } else {
                $iRandColour = rand(100, 250);
                $iLineColour = imagecolorallocate($this->oImage, $iRandColour, $iRandColour, $iRandColour);
            }
            // draw line
            imageline($this->oImage, rand(0, $this->iWidth), rand(0, $this->iHeight), rand(0, $this->iWidth), rand(0, $this->iHeight), $iLineColour);
        }
    }