Cleaning up css

Is there a way to clean up your external style sheet. In other words, I have made many changes to my site, positioning elements mainly and naming my styles differently from the original. I want to delete all the styles in my css stylesheet that no longer applies to my newly edited site. Is there a way for dreamweaver to check and delete all styles in the style sheet that no longer link to elements in the site??

Or does all of that have to be done manually in the css source code??

Cleaning up css

https://addons.mozilla.org/en-US/firefox/addon/5392

There's a Firefox add on.

I guess you've used a validator as well? That'll help ''clean up'' you code although not so useful for removing redundant rules.

Martin

Cleaning up css

There is this app, but I have never used it:

http://www.highdots.com/css-editor/waznew.asp

I am not sure that DW has anything built in.