--- imageapi_gd.module	2009-10-13 00:11:17.000000000 +0100
+++ imageapi_gd.module	2009-10-13 00:10:24.000000000 +0100
@@ -92,7 +92,7 @@ function imageapi_gd_image_close($image,
  * @return
  *   TRUE or FALSE, based on success.
  */
-function imageapi_gd_image_crop(&$image, $x, $y, $width, $height) {
+function imageapi_gd_image_crop($image, $x, $y, $width, $height) {
   $res = imageapi_gd_create_tmp($image, $width, $height);
 
   if (!imagecopyresampled($res, $image->resource, 0, 0, $x, $y, $width, $height, $width, $height)) {
@@ -120,7 +120,7 @@ function imageapi_gd_image_crop(&$image,
  * @return
  *   TRUE or FALSE, based on success.
  */
-function imageapi_gd_image_resize(&$image, $width, $height) {
+function imageapi_gd_image_resize($image, $width, $height) {
   $res = imageapi_gd_create_tmp($image, $width, $height);
 
   if (!imagecopyresampled($res, $image->resource, 0, 0, 0, 0, $width, $height, $image->info['width'], $image->info['height'])) {
@@ -152,7 +152,7 @@ function imageapi_gd_image_resize(&$imag
  * @return
  *   TRUE or FALSE, based on success.
  */
- function imageapi_gd_image_rotate(&$image, $degrees, $background) {
+ function imageapi_gd_image_rotate($image, $degrees, $background) {
   // PHP installations using non-bundled GD do not have imagerotate.
   if (!function_exists('imagerotate')) {
     require_once drupal_get_path('module', 'imageapi_gd') .'/imagerotate.inc';
@@ -202,7 +202,7 @@ function imageapi_gd_image_resize(&$imag
   return TRUE;
 } 
 
-function imageapi_gd_image_sharpen(&$image, $radius, $sigma, $amount, $threshold) {
+function imageapi_gd_image_sharpen($image, $radius, $sigma, $amount, $threshold) {
   $threshold = round($threshold * 255);
   $image->resource = imageapi_gd_unsharp_mask($image->resource, $radius, $sigma, $amount, $threshold);
   return TRUE;
@@ -218,7 +218,7 @@ function imageapi_gd_image_sharpen(&$ima
  * @return
  *   TRUE or FALSE, based on success.
  */
-function imageapi_gd_image_desaturate(&$image) {
+function imageapi_gd_image_desaturate($image) {
   // PHP installations using non-bundled GD do not have imagefilter.
   if (!function_exists('imagefilter')) {
     require_once drupal_get_path('module', 'imageapi_gd') .'/imagefilter.inc';