function imagetrim($im, $bgcol, $pad=null){

        $p = array_fill(0, 4, 0);

    // Get the width and height of the image.
    $imw = imagesx($im);
    $imh = imagesy($im);

    // Set the X variables.
    $xmin = $imw;
    $xmax = 0;

    // find the endges.
    for ($iy=0; $iy<$imh; $iy++) {
        $first = true;
        for ($ix=0; $ix<$imw; $ix++) {
            $ndx = imagecolorat($im, $ix, $iy);
            if ($ndx != $bgcol) {
                if ($xmin > $ix) { $xmin = $ix; }
                if ($xmax < $ix) { $xmax = $ix; }
                if (!isset($ymin)) { $ymin = $iy; }
                $ymax = $iy;
                if ($first) { $ix = $xmax; $first = false; }
            }
        }
    }

    // The new width and height of the image. (not including padding)
    $imw = 1+$xmax-$xmin; // Image width in pixels
    $imh = 1+$ymax-$ymin; // Image height in pixels

    // Make another image to place the trimmed version in.
    $im2 = imagecreatetruecolor($imw+$p[1]+$p[3], $imh+$p[0]+$p[2]);

    // Make the background of the new image the same as the background of the old one.
    $bgcol2 = imagecolorallocate($im2, ($bgcol >> 16) & 0xFF, ($bgcol >> 8) & 0xFF, $bgcol & 0xFF);
    imagefill($im2, 0, 0, $bgcol2);

    // Copy it over to the new image.
    imagecopy($im2, $im, $p[3], $p[0], $xmin, $ymin, $imw, $imh);

    // To finish up, return the new image.
    return $im2;
}
?>