Modifying alot, now i have a postbit issue HELP

[Keyser S?ze]

i dont know which mod has caused this but i have an error in my postbit_legacy

as u can see from the picture the text box and smilies exten out further than the rest of it, i can provide the code if needed, pls help

[Dismounted]

You will need to decrease the size of the message area - this can be found in the StyleVars under the Style Manager.