Error while posting

[Abhik]

Hello,
My members are getting this strange problem while posting on board.
Have a look at it
http://img299.imageshack.us/img299/6090/123px8.gif

Please suggest me something to resolve this.

[Dismounted]

You may have to revert your templates.

[Abhik]

How would I do that..?
Don't mind, I am a n00b here.

[Dismounted]

In the style manager - click "Revert All Templates". You will lose any customisations done to templates.

[Abhik]

I already done that.. but the problem remains..
Any suggestions? My members can not post due to this.

[Dismounted]

Disable all modifications.