Google Maps: Clickable KML Layers

We require a single HTML page with a google map showing 3 different KML overlays that are set to 50% opacity and are clickable through to a different URL for each. See mockup; [login to view URL] KML files are here. Title: North West Slopes [login to view URL] Title: Northern Rivers [login to view URL] Title: Mid North Coast [login to view URL] Note that each KML overlay should have a text title over the middle of it, as per the mockup.