Issues with “Visual” writing mode

Hello Everyone,

I’m having issues with one of my wordpress installations. When I try to write a new post to my blog, it won’t let me chose between “code” and “visual” mode. The “visual” mode looks like it’s activated, when in fact the “code” mode is, as can be seen by the buttons on the top of the writing box. It is impossible to switch between them as it doesn’t let me click the visual/code links.

Here’s a screenshot of what it looks like
Screenshot (clicky).

Does anyone have any idea how this issue could be resolved? Any help is greatly appreciated!

Thanks,

Gekko