[OpenLayers-Users] Two Google layers with specified max and min zoom levels

Tue Apr 8 00:32:20 EDT 2008

I am trying to get the following simple map to work so that the user can 
zoom in to the maximum level available for each layer, and when 
switching between the two base layers there are not any jumps in the 
zoom level. I see several posts in the forum about this issue, but none 
seem to have the complete solution. This would make a great example map 
to add to your list, if someone could help get this working.
Thanks, Tara

<head>
        <link rel="stylesheet" 
href="http://www.openlayers.org/dev/theme/default/style.css" 
type="text/css" />
      <script 
src="http://maps.google.com/maps?file=api&amp;v=2&amp;key=ABQIAAAAIy8lG8k0bDNp_2oCuJP6GRRgIxCI1T7LqjqwJd5RhaiEwpop1hQHuLRkRnN_y0SSf_z_sWCnmf3v1w" 
type="text/javascript"></script>
      <script src="http://openlayers.org/api/OpenLayers.js" 
type="text/javascript"></script>

 </head>
<body>
  <div id="map" ></div>
    <script defer="defer" type="text/javascript">
    <!--
            var map, layer;
            var lon, lat, zoom;

                map = new OpenLayers.Map( 'map', {controls: [new 
OpenLayers.Control.PanZoomBar()], 'numZoomLevels':15} );
                map.addControl(new OpenLayers.Control.LayerSwitcher());
            var google = new OpenLayers.Layer.Google("Google Streets", 
{MIN_ZOOM_LEVEL:9, MAX_ZOOM_LEVEL:23});
            var googleh = new OpenLayers.Layer.Google("Google Hybrid", { 
'type': G_HYBRID_MAP, MIN_ZOOM_LEVEL:9, MAX_ZOOM_LEVEL:23 });
            map.addLayers([google, googleh]);

                lon = -123;
                lat = 39.5;
                zoom = 0;
            map.setCenter(new OpenLayers.LonLat(lon,lat), zoom);

     -->       
    </script>
</body>