try adding the following code to the map tab:
change:
<li class="TabbedPanelsTab" tabindex="0">LOCAL MAPS</li>
to:
<li class="TabbedPanelsTab" tabindex="0" onClick="window.setTimeout(function() {google.maps.event.trigger(map, 'resize');map.setCenter(google.maps.LatLng(-25.363882, 131.044922));},30);">LOCAL MAPS</li>