This is an example of a map-based search interface. It includes all the client side behaviour needed for a search system.
To let you see it working before you have set up a search system on your server, we have provided file containing a set of "search results". Because they come from a file, these obviously will not reflect your search criteria --- the selected area or the chosen range of letters.
The `Which Results' selector can be used to select between two fixed sets of "search results", a random scattering of results or a CGI search engine. The tutorial gives more details of how to use them.