function initialize() {
      if (GBrowserIsCompatible()) {
        var map = new GMap2(document.getElementById("map_canvas_athens"));
        map.setCenter(new GLatLng(38.04413,23.752045), 15);
        map.setUIToDefault();


		var map_b = new GMap2(document.getElementById("map_canvas_thes"));
        map_b.setCenter(new GLatLng(40.64307,22.931664), 13);
        map_b.setUIToDefault(); 

		var baseIcon = new GIcon(G_DEFAULT_ICON);
        baseIcon.shadow = "http://www.google.com/mapfiles/shadow50.png";
        baseIcon.iconSize = new GSize(20, 34);
        baseIcon.shadowSize = new GSize(37, 34);
        baseIcon.iconAnchor = new GPoint(9, 34);
        baseIcon.infoWindowAnchor = new GPoint(9, 2);



       function createMarker(point, index) {
  

          var redIcon = new GIcon(baseIcon);
          redIcon.image = "http://www.google.com/mapfiles/marker.png";


          markerOptions = { icon:redIcon };
          var marker = new GMarker(point, markerOptions);
marker.openInfoWindowHtml("Prosvasis AEBE,<br><br> <b>Διεύθυνση:</b> Ελευθερίου Βενιζέλου 63, Ν.Ιωνία<br>");

          GEvent.addListener(marker, "click", function() {
            marker.openInfoWindowHtml("Prosvasis AEBE,<br><br> <b>Διεύθυνση:</b> Ελευθερίου Βενιζέλου 63, Ν.Ιωνία<br>");
          });
          return marker;
        }

    
function createMarker_b(point, index) {
 

          var redIcon = new GIcon(baseIcon);
          redIcon.image = "http://www.google.com/mapfiles/marker.png";


          markerOptions = { icon:redIcon };
          var marker_b = new GMarker(point, markerOptions);
marker_b.openInfoWindowHtml("Prosvasis AEBE - Θεσσαλονίκη,<br><br> <b>Διεύθυνση:</b> Μιχαήλ Καλού 6<br>");
          GEvent.addListener(marker_b, "click", function() {
            marker_b.openInfoWindowHtml("Prosvasis AEBE - Θεσσαλονίκη,<br><br> <b>Διεύθυνση:</b> Μιχαήλ Καλού 6<br>");
          });
          return marker_b;
        } 
		

         var latlng = new GLatLng(38.04413,23.752045);
          map.addOverlay(createMarker(latlng));
		  
		  var latlng_b = new GLatLng(40.64307,22.931664);
          map_b.addOverlay(createMarker_b(latlng_b)); 
}




    }