When was that page made?

If you've ever wondered how to check to see when a specific webpage was last updated, here's a nifty tool.

Copy and paste the following script into the address line where you usually see the url of the page you're on:

javascript:alert(document.lastModified)

Or click here to see a demonstration.

It works well for static html pages.  Dynamic pages like CGI and PHP (e.g. this page) etc. will give the current date and time.  And you need to have javascript enabled for this to work.