Index: branches/5.2.x/core/admin_templates/js/script.js
===================================================================
diff -u -N -r15411 -r15539
--- branches/5.2.x/core/admin_templates/js/script.js	(.../script.js)	(revision 15411)
+++ branches/5.2.x/core/admin_templates/js/script.js	(.../script.js)	(revision 15539)
@@ -468,16 +468,15 @@
 
 		if ( $pm ) {
 			// popup manager was found in head frame
-			$pm.ResponceFunction = function ($responce) {
-				if ( !$responce.match(/([\d]+)x([\d]+)/) ) {
-					// invalid responce was received, may be php fatal error during AJAX request
-					$responce = $default_size;
+			$pm.GetSize($t, function ($response) {
+				if ( !$response.match(/([\d]+)x([\d]+)/) ) {
+					// invalid response was received, may be php fatal error during AJAX request
+					$response = $default_size;
 				}
 
-				open_popup($prefix_special, $event, $t, $responce, $onAfterOpenPopup);
-			}
+				open_popup($prefix_special, $event, $t, $response, $onAfterOpenPopup);
+			});
 
-			$pm.GetSize($t);
 			return;
 		}