+/**\r
+ * Handles a button click.\r
+ * @private\r
+ */\r
+CKEDITOR.ui.button._ =\r
+{\r
+ instances : [],\r
+\r
+ keydown : function( index, ev )\r
+ {\r
+ var instance = CKEDITOR.ui.button._.instances[ index ];\r
+\r
+ if ( instance.onkey )\r
+ {\r
+ ev = new CKEDITOR.dom.event( ev );\r
+ return ( instance.onkey( instance, ev.getKeystroke() ) !== false );\r
+ }\r
+ },\r
+\r
+ focus : function( index, ev )\r
+ {\r
+ var instance = CKEDITOR.ui.button._.instances[ index ],\r
+ retVal;\r
+\r
+ if ( instance.onfocus )\r
+ retVal = ( instance.onfocus( instance, new CKEDITOR.dom.event( ev ) ) !== false );\r
+\r
+ // FF2: prevent focus event been bubbled up to editor container, which caused unexpected editor focus.\r
+ if ( CKEDITOR.env.gecko && CKEDITOR.env.version < 10900 )\r
+ ev.preventBubble();\r
+ return retVal;\r
+ }\r
+};\r
+\r
+( function()\r
+{\r
+ var keydownFn = CKEDITOR.tools.addFunction( CKEDITOR.ui.button._.keydown, CKEDITOR.ui.button._ ),\r
+ focusFn = CKEDITOR.tools.addFunction( CKEDITOR.ui.button._.focus, CKEDITOR.ui.button._ );\r
+\r