Drupal make GMap talk to Views paged result

Hi, take a look at [login to view URL] Center column is a list of roundabouts. Left column are exposed filters for finding roundabouts. Right column is GMap module. Currently source for GMap is custom php which retreives all roundabouts from the database. So if there are 10 roundabouts in the database, and user filters the result list show there are only 3 roundabouts in the result, map still shows all 10 roundabouts. We would like: 1. Map to only show the roundabouts which are the result of the selection done by the user, using exposed filters in the left column. 2. Automatically adjust zoom level of the map to show those roundabouts spread out over the map. Thanks,