center the map on the clicked marker
httpGet return json, not txt
hide only countLayout while zoom in
fix layer show/hide behavior, show events of clicked city while zoom change and click
show tooltip of city outside the map
set setLayerVisibility on moveend to fix showinng error while switch city on same zoom level
set default view and zoom of map
Merge pull request #63 from yglin/mapview

add map view
Merge branch 'master' of https://github.com/yglin/eCourt into develop