tch-btn").bind('click', function() {
                    testEditor.watch();
                });                 

                $("#unwatch-btn").bind('click', function() {
                    testEditor.unwatch();
                });              

                $("#preview-btn").bind('click', function() {
                    testEditor.previewing();
                });

                $("#fullscreen-btn").bind('click', function() {
                    testEditor.fullscreen();
                });
   