Again, since I wanted to find all the 'class="SOMETHING"', 'id="SOMETHING"' and 'style="SOMETHING"' I needed a good match for "SOMETHING". After messing around for a little while I came up with this:
The first part
(class|id|style) say's: match 'class' or 'id' or 'style', that's pretty easy.
The second part:
="[^"]+" is a little more confusing. It says match ="SOMETHING" where something has no quotation mark(s) in it [^"] is the SOMETHING.