var centerLatitude = 51.458069;
var centerLongitude = 7.014761;
var startZoom = 12;
var map;



function init()
{
  if (GBrowserIsCompatible()) {
    map = new GMap2(document.getElementById("map"));
    map.addControl(new GSmallMapControl());
    map.setCenter(new GLatLng(centerLatitude,
                      centerLongitude), startZoom);

   
  }
}

window.onload = init;
window.onunload = GUnload;