Ticket #1751: 1751.diff

src/fx.js

@@ -66 +66 @@
     },
     
     animate: function( prop, speed, easing, callback ) {
-        var opt = jQuery.speed(speed, easing, callback);
+        var optall = jQuery.speed(speed, easing, callback);
 
-        return this[ opt.queue === false ? "each" : "queue" ](function(){
-            opt = jQuery.extend({}, opt);
+        return this[ optall.queue === false ? "each" : "queue" ](function(){
+            var opt = jQuery.extend({}, optall);
             var hidden = jQuery(this).is(":hidden"), self = this;
             
             for ( var p in prop ) {