map = new OpenLayers.Map('myMap', {
        units: 'm',
        zoomMethod: null,
        projection: epsg900913,
        displayProjection: epsg4326
    });


    var ggl = new OpenLayers.Layer.Google('1',{type: google.maps.MapTypeId.ROADMAP });
    var sat = new OpenLayers.Layer.Google('2', {type: google.maps.MapTypeId.SATELLITE});
    var hybrid = new OpenLayers.Layer.Google('3', {type: google.maps.MapTypeId.HYBRID});

    map.addLayers([ggl,hybrid,sat]);