+function getUrl(map) {
+ var center = map.getCenter(),
+ zoom = map.getZoom();
+ return (window.location.hostname.match(/^www\.openstreetmap\.org/i) ?
+ 'http://openstreetmap.org/?' : '/?') +
+ querystring.stringify({
+ lat: center.lat,
+ lon: center.lng,
+ zoom: zoom
+ });
+}
+