Index: image_helper.php
===================================================================
--- image_helper.php	(revision 13134)
+++ image_helper.php	(working copy)
@@ -171,7 +171,9 @@
 				if ($src_image_rs) {
 					$dst_image_rs = imagecreatetruecolor($params['target_width'], $params['target_height']); // resize target size
 
-					if (($file_extension == 'gif') || ($file_extension == 'png')) {
+					$preserve_transparency = ($file_extension == 'gif') || ($file_extension == 'png');
+
+					if ($preserve_transparency) {
 						// preserve transparency of PNG and GIF images
 						$dst_image_rs = $this->_preserveTransparency($src_image_rs, $dst_image_rs, $image_info[2]);
 					}
@@ -183,11 +185,11 @@
 
 					if (array_key_exists('crop_x', $params) || array_key_exists('crop_y', $params)) {
 						// 2.1. crop image to given size
-						$dst_image_rs =& $this->_cropImage($dst_image_rs, $params);
+						$dst_image_rs =& $this->_cropImage($dst_image_rs, $params, $preserve_transparency ? $image_info[2] : false);
 						$watermark_size = 'max';
 					} elseif (array_key_exists('fill', $params)) {
 						// 2.2. fill image margins from resize with given color
-						$dst_image_rs =& $this->_applyFill($dst_image_rs, $params);
+						$dst_image_rs =& $this->_applyFill($dst_image_rs, $params, $preserve_transparency ? $image_info[2] : false);
 						$watermark_size = 'max';
 					}
 
@@ -259,9 +261,10 @@
 		 *
 		 * @param resource $src_image_rs resized image resource
 		 * @param Array $params crop parameters
+		 * @param int $image_type
 		 * @return resource
 		 */
-		function &_applyFill(&$src_image_rs, $params)
+		function &_applyFill(&$src_image_rs, $params, $image_type = false)
 		{
 			$x_position = round(($params['max_width'] - $params['target_width']) / 2); // center
 			$y_position = round(($params['max_height'] - $params['target_height']) / 2); // center
@@ -269,6 +272,10 @@
 			// crop resized image
 			$fill_image_rs = imagecreatetruecolor($params['max_width'], $params['max_height']);
 
+			if ($image_type !== false) {
+				$fill_image_rs = $this->_preserveTransparency($src_image_rs, $fill_image_rs, $image_type);
+			}
+
 			$fill = $params['fill'];
 
 			if (substr($fill, 0, 1) == '#') {
@@ -291,9 +298,10 @@
 		 *
 		 * @param resource $src_image_rs resized image resource
 		 * @param Array $params crop parameters
+		 * @param int $image_type
 		 * @return resource
 		 */
-		function &_cropImage(&$src_image_rs, $params)
+		function &_cropImage(&$src_image_rs, $params, $image_type = false)
 		{
 			if ($params['crop_x'] == 'c') {
 				$x_position = round(($params['max_width'] - $params['target_width']) / 2); // center
@@ -317,8 +325,16 @@
 
 			// crop resized image
 			$crop_image_rs = imagecreatetruecolor($params['max_width'], $params['max_height']);
-			$crop_image_rs =& $this->_applyFill($crop_image_rs, $params);
 
+			if ($image_type !== false) {
+				$crop_image_rs = $this->_preserveTransparency($src_image_rs, $crop_image_rs, $image_type);
+			}
+
+			if (array_key_exists('fill', $params)) {
+				// fill image margins from resize with given color
+				$crop_image_rs =& $this->_applyFill($crop_image_rs, $params, $image_type);
+			}
+
 			imagecopy($crop_image_rs, $src_image_rs, $x_position, $y_position, 0, 0, $params['target_width'], $params['target_height']);
 
 			return $crop_image_rs;