Interesting. That's very similar to what I did for a recent small web site. The only real difference is that instead of using a cookie, the hash is kept in a hidden input field on each screen. This works as long as the screen-to-screen transitions are form based (rather than links), and has the advantage that it doesn't rely on user/browser acceptance of cookies.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
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Snippets of code should be wrapped in
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<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
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Want more info? How to link or
or How to display code and escape characters
are good places to start.