var MyOpenLayerMap = function(config) {
    if (config.lat) MyOpenLayerMap.lat = config.lat;
    if (config.lon) MyOpenLayerMap.lon = config.lon;
    if (config.zoom) MyOpenLayerMap.zoom = config.zoom;
    if (config.map) MyOpenLayerMap.map = config.map;
    
    this.config = config;
    
    var map = new OpenLayers.Map (MyOpenLayerMap.map, {
        controls:[
            new OpenLayers.Control.Navigation(),
            new OpenLayers.Control.PanZoomBar(),
            new OpenLayers.Control.LayerSwitcher(),
            new OpenLayers.Control.Attribution()],
        maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34),
        maxResolution: 156543.0399,
        numZoomLevels: 19,
        units: 'm',
        projection: new OpenLayers.Projection("EPSG:900913"),
        displayProjection: new OpenLayers.Projection("EPSG:4326")
    } );

    // Define the map layer
    // Note that we use a predefined layer that will be
    // kept up to date with URL changes
    // Here we define just one layer, but providing a choice
    // of several layers is also quite simple
    // Other defined layers are OpenLayers.Layer.OSM.Mapnik, OpenLayers.Layer.OSM.Maplint and OpenLayers.Layer.OSM.CycleMap
    layerMapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik");
    map.addLayer(layerMapnik);
    layerTilesAtHome = new OpenLayers.Layer.OSM.Osmarender("Osmarender");
    map.addLayer(layerTilesAtHome);
    layerCycleMap = new OpenLayers.Layer.OSM.CycleMap("CycleMap");
    map.addLayer(layerCycleMap);
    layerMarkers = new OpenLayers.Layer.Markers("Markers");
    map.addLayer(layerMarkers);

    var lonLat = new OpenLayers.LonLat(MyOpenLayerMap.lon, MyOpenLayerMap.lat).transform(new OpenLayers.Projection("EPSG:4326"), map.getProjectionObject());
    map.setCenter (lonLat, MyOpenLayerMap.zoom);

    var size = new OpenLayers.Size(21,25);
    var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
    var icon = new OpenLayers.Icon('http://www.openstreetmap.org/openlayers/img/marker.png',size,offset);
    layerMarkers.addMarker(new OpenLayers.Marker(lonLat,icon));

    this.onInit();
}

MyOpenLayerMap.prototype.onInit = function() {

}