I am editting another person idiotically written code along with a separate id and sophistication title is offered to a lot of elements which i doubt if is even used, ever. I wish to see if the id or class title provided to any element is ever used.
Can One do this in Dreamweaver, or other IDE for your matter?
Well I'm not sure the options of Dreamweaver, but a complete text explore all of your codebase might be a fundamental method that may always work.
If you want command line solutions you can turn to grep, perl, findstr or anything you are comfy with.
Google Chrome comes with an audit feature which will report unused CSS classes.
unused-css.com also attempts use a tool to identify unused CSS even though site should be openly available.