Post Background Has Turned Black

Since last night I have a problem in my forum relase
http://relax.moninter.net/forum

Look at Mozilla. Fields where writes are black.
It's the same on Google Crome, only the explorer no problem.
Please note that the days I have not changed and you do not
I know what it's about.
Help me

The reason why is that there is an image there that has been removed/deleted.

Check your whole CSS (It could be in more than one place.) for this image URL:

Code:

http://desmond.imageshack.us/Himg842/scaled.php?server=842&filename=ibackgroundwom.png&res=medium


How do I find all these pictures?
Do you think anything would change, if I change my style?

Administration Panel > Display > Colors & Pictures > Colors
CSS Stylesheet Tab
Check here for that image URL.