That code part is a bit messed up. here is a better version:
Uncaught TypeError: Object [object Object] has no method 'wpdialog'
tinymce.create.open
i.(anonymous function).(anonymous function)
(anonymous function)
k.create.execCommand
i.onclick
(anonymous function)
j
y
and this is behind every line
wp-tinymce.php?c=1&ver=358-24485:24
Fixed it, added the display:none into my style.css and not in the direct text editor.
Or you can lower the z-index of the slideshow so that the menu will stay in front of it.