function initialize() {
      if (GBrowserIsCompatible()) {
        var map = new GMap2(document.getElementById("map_canvas"));
        var center = new GLatLng(41.988788, -87.813076);
        map.setCenter(center, 16);

        var marker = new GMarker(center, {draggable: true});

        GEvent.addListener(marker, "dragstart", function() {
          map.closeInfoWindow();
        });

        GEvent.addListener(marker, "dragend", function() {
          marker.openInfoWindowHtml("Just bouncing along...");
        });

        map.addOverlay(marker);
        
        map.openInfoWindow(map.getCenter(), "<strong>Northwest Suburban Urologists</strong><br />7447 W Talcott Ave<br />Chicago, IL 60631");
				
        var mapTypeControl = new GMapTypeControl();
        var topRight = new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(10,10));
        var bottomRight = new GControlPosition(G_ANCHOR_BOTTOM_RIGHT, new GSize(10,10));
        map.addControl(mapTypeControl, bottomRight);
        GEvent.addListener(map, "dblclick", function() {
          map.removeControl(mapTypeControl);
          map.addControl(new GMapTypeControl(), bottomRight);
        });
        map.addControl(new GSmallMapControl());

      }
    }
	
	function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent( function() { initialize()} )