if ($this->mime_type == "image/jpeg") {
$new_image   = imagecreatefromjpeg($destination.$this->md5_name);
$blank_image = ImageCreateTrueColor($new_width, $new_height);
$col         = imagecolorallocate($blank_image, $this->red, $this->green, $this->blue);
imagefilledrectangle($blank_image, 0, 0, $new_width, $new_height, $col);										
$newimage    = ImageCopyResampled($blank_image, $new_image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagejpeg($blank_image, $destination."thumbs/".$this->md5_name.$t['suffix']);
}
elseif ($this->mime_type == "image/gif") {
$new_image   = imagecreatefromgif($destination.$this->md5_name);
$blank_image = ImageCreateTrueColor($new_width, $new_height);
$col         = imagecolorallocate($blank_image, $this->red, $this->green, $this->blue);
imagefilledrectangle($blank_image, 0, 0, $new_width, $new_height, $col);						
$newimage    = ImageCopyResampled($blank_image, $new_image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagegif($blank_image, $destination."thumbs/".$this->md5_name.$t['suffix']);
}
elseif ($this->mime_type == "image/png") {
$new_image   = imagecreatefrompng($destination.$this->md5_name);
$blank_image = ImageCreateTrueColor($new_width, $new_height);
$col         = imagecolorallocate($blank_image, $this->red, $this->green, $this->blue);
imagefilledrectangle($blank_image, 0, 0, $new_width, $new_height, $col);
$newimage    = ImageCopyResampled($blank_image, $new_image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
imagepng($blank_image, $destination."thumbs/".$this->md5_name.$t['suffix']);
}