var centerLatitude = -27.455159;
var centerLongitude = 153.048965;
var startZoom = 15;

var map;

function init()
{
    if (GBrowserIsCompatible()) {	
        map = new GMap2(document.getElementById("map"));
        var location = new GLatLng(centerLatitude, centerLongitude);
        map.setCenter(location, startZoom);
		var marker = new GMarker(location);
		map.addOverlay(marker);
    }
}

window.onload = init;