moving text to left past margin

If I have margin defined and still would like to use whole available
space in somecases what should I do?

This didn't work:
.tight { margin-left: 0; margin-right: 0; }

What I actually need to accomplish is to fit large line from perl script.
And still have normal margin elsewhere.

It fells silly, but should I just drop the margin from BODY and put it
in UL for example, and when I want 0 margin text just close the UL?

-- 
	--ytti - ::3585:0512:1378