[OpenLayers-Users] Overviewbox causes "bounds is null "error

[jas_gao]

Sorry, the code is unreadable above, here it is!.


var proj = new OpenLayers.Projection("EPSG:4326");
map = new OpenLayers.Map($('center'), {
        maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34),
        numZoomLevels: 18,
        maxResolution: 156543.0339,
        units: 'm',
        projection: "EPSG:900913",
        displayProjection: new OpenLayers.Projection("EPSG:4326")
    });

        maxZOOM = 21
        var gphy = new OpenLayers.Layer.Google("Google Physical",  {type: G_PHYSICAL_MAP,  sphericalMercator : true, MAX_ZOOM_LEVEL:maxZOOM} );
        var ghyb = new OpenLayers.Layer.Google("Google Hybrid",    {type: G_HYBRID_MAP,    sphericalMercator : true, MAX_ZOOM_LEVEL:maxZOOM} );
        var gsat = new OpenLayers.Layer.Google("Google Satellite", {type: G_SATELLITE_MAP, sphericalMercator : true, MAX_ZOOM_LEVEL:maxZOOM} );

        map.addLayers([gsat, gphy, ghyb]);

// adding overview here which causes error
var overviewoptions = {
            maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34),
            maxResolution: 156543.0339,
            projection: "EPSG:900913",
            displayProjection: new OpenLayers.Projection("EPSG:4326")
        };
        
        map.addControl(new OpenLayers.Control.OverviewMap({
            div: OpenLayers.Util.getElement('overview'),
            size: new OpenLayers.Size(200, 128),
            mapOptions: overviewoptions
        }));

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