[TYPO3-english] changing an image wrap

[David Banning]

I want to change the wrap on images - but I would like it optional 

So I am thinkign of changing the wrap;

tt_content.image.20.imageStdWrapNoWidth.wrap = <div class="csc-textpic-imagewrap"> | </div>

My problem is if I change this wrap, it changes for all images. Is there a way to 
selectively change the wrap?