Where can I get this image mod?

[1aleem]

Does anyone know where i can get this mod?

When you hover the cursor over the thread title, a popup appears displaying the first four thumbs in the first post.

http://img370.imageshack.us/img370/6945/thread6xo.th.jpg (http://img370.imageshack.us/my.php?image=thread6xo.jpg)

[unitedpunjab]

Nice hack....any one plzzz help :)