Debug WordPress site in all browsers and clean up html

I need WordPress site to be quality tested in all major browers, IE7, IE8, FF, Chrome, and Safari. All menu items should work properly and headings, graphics, text, links, etc, should also be consistent and render well. I also need all the content html to be cleaned up properly and images to be layed out properly to work with the text. An overall QA of the site. Attached is mockup with all the pages that are intact. I need this done asap.