search box should be a suggestion box about javadoc-reader HOT 4 OPEN

On second thought, ENTER should load the best match, not only a perfect match.

Summary of
http://groups.google.com/group/javadoc-reader-users/browse_thread/thread/9f8d741
3127c1c66

 * If the needle box has focus and has text, then a suggestion box appears that lists
the [5.. 10] most used classes/packages that match.
 * If the needle box is empty then the left frame lists the recently used
classes/packages.
 * If the needle box is not empty and does not have focus then the left frame lists
all classes/packages that match the query.
 * The ordering of classes/packages is always alphabetical.

recently used = last [50.. 200] clicks on a class/package.
most used = sort the recently used ones by how often they appear in the 
recently used
list

Plan: Keep a recently used list on the server for each user id. Keep the user 
id in a
cookie. Inform the server whenever user views a class/package.

 * If the user presses enter in the needle box and there is an exact match then open
the corresponding page.