jquery-form#323,jquery-form#339; fix error when no options passed

Author: malsup

jquery.form.js

@@ -1,6 +1,6 @@
 /*!
  * jQuery Form Plugin
- * version: 3.36.0-2013.06.16
+ * version: 3.37.0-2013.07.11
  * @requires jQuery v1.5 or later
  * Copyright (c) 2013 M. Alsup
  * Examples and documentation at: http://malsup.com/jquery/form/
@@ -89,6 +89,9 @@ $.fn.ajaxSubmit = function(options) {
     if (typeof options == 'function') {
         options = { success: options };
     }
+    else if ( options === undefined ) {
+        options = {};
+    }
 
     method = options.type || this.attr2('method');
     action = options.url  || this.attr2('action');