Another little bonus of building this slide show app this way, is that it is super-easy to share the results. I made sure that the tag entered was echoed into the address of the page as the page fragment identifier. Manipulating and interrogating the frag id can be useful in Ajax applications as my colleague Michael Mahemoff explained recently. When the page loads, it looks for a tag stored in the frag id as its starting point. That means you can bookmark slide shows and share them as easily as email a URI. Here are a few:
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