element can also be removed during gainfocus

source/UI/js/Core/Focus.js

@@ -49,11 +49,15 @@ Ox.Focus = (function() {
                                 .triggerEvent('losefocus');
                         } catch(e) {
                             that.cleanup();
-                        } 
+                        }
+                    }
+                    try {
+                        $element
+                            .addClass('OxFocus')
+                            .triggerEvent('gainfocus');
+                    } catch(e) {
+                        that.cleanup();
                     }
-                    $element
-                        .addClass('OxFocus')
-                        .triggerEvent('gainfocus');
                 }
             },
             hasFocus: function($element) {
@@ -97,4 +101,4 @@ Ox.Focus = (function() {
 
     return that;
 
-}());
+}());