I have to create a searchable list on a web page. The list is of 400 locations and there status eg;

Dublin 44
Paris 66
London 77

The the query would be;

dublin = Dublin 44
or
Tokyo = no entry for tokyo

What's the best way to do this?

Use a database

Thanks, but if this was not an option, would there be any other way of doing it?

Just create the list on a page and let end users use ctrl+F

How would I go about creating a series of drop down menus that open up new options depending on the last input eg;

1st menu
>DUBLIN
>LONDON

if
DUBLIN

2nd menu
>NORTH DUBLIN
>EAST DUBLIN
>SOUTH DUBLIN

if
LONDON

2nd menu
>NORTH LONDON
>EAST LONDON
>SOUTH LONDON

With what code? The usual practice would be to use AJAX calls to trigger serverside scripts and read the options from a database.

It can be done with predefined javascripts but ALL the data would have to be written into the page source and with more than 2 or 3 select boxes it would get very unwieldy.