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well... sort of.. if you're using IE, there's a nifty tool called "Document tree" you can use - it's not just doing what you're asking, but it also does this.
1) Search for "Microsoft Web Developer Accessories" at your favorite Search Engine.
2) Download and install.
3) Visit the page, right click it, choose "Document Tree"
4) A new window will pop-up with all page properties. Locate "all" and click it, and there it is along with a lot of numbers.
i'm not fully positive but would the DOM inspector in Mozilla do that for you?