var geocoder;
  var map;
  var adUnit;

  function initialize() {
    geocoder = new google.maps.Geocoder();
    var latlng = new google.maps.LatLng(50.11545, 8.67103);
    var myOptions = {
      zoom: 16,
      center: latlng,
      mapTypeId: google.maps.MapTypeId.HYBRID,
	  mapTypeControl: true,
	  scaleControl: false 
    }
    map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);

  var adUnitDiv = document.createElement('div');
  var adUnitOptions = {
	format: google.maps.adsense.AdFormat.HALF_BANNER,
    position: google.maps.ControlPosition.TOP,
    map: map,
    visible: true,
    publisherId: 'pub-0508634837628826'
  }
  adUnit = new google.maps.adsense.AdUnit(adUnitDiv, adUnitOptions);

  }

  function codeAddress() {
    var address = document.getElementById("address").value;
    if (geocoder) {
      geocoder.geocode( { 'address': address}, function(results, status) {
        if (status == google.maps.GeocoderStatus.OK) {
          map.setCenter(results[0].geometry.location);
          var marker = new google.maps.Marker({
              map: map, 
              position: results[0].geometry.location
          });
        } else {
			var mapdiv = document.getElementById("mapdiv");
			mapdiv.style.display = "none";
			
		   alert("Die Strassenkarte kann nicht angezeigt werden: " + status);
        }
      });
    }
  }