def list
    @map = GMap.new('map_div')
    @map.control_init(:large_map => true, :map_type => true)
    @map.center_zoom_init([19.5,-99.5],8)

    @map.icon_global_init( GIcon.new( :image => "/images/up.png", 
                                      :icon_size => GSize.new( 16,16 ),
                                      :icon_anchor => GPoint.new(8,0),
                                      :info_window_anchor => GPoint.new(9,2) ), 
                           "icon_up")  
    icon_up = Variable.new("icon_up")

    (1..10).each do |offset|
      lat = 19 + rand
      long = -100 + rand
      marker = GMarker.new([lat, long],
                                    :title => 'Lugar',
                                    :icon => icon_up,
                                    :draggable => true,
                                    :info_window => "Este es el lugar #{offset}"
                           )
      @map.declare_init(marker, "marker_#{offset}")
      @map.overlay_init(marker)
      snippet = 'function () {new Ajax.Updater('url',params)}'
      @map.event_init(marker, :dragend, snippet)