var map;

    function createMarker(number,lat,lng) {
       var point=new GLatLng(lat,lng);
       var marker = new GMarker(point);
       GEvent.addListener(marker, "click", function() {
         window.location="page_"+number+".html";
       });
       GEvent.addListener(marker, "mouseover", function() {
         marker.openInfoWindowHtml("<img src=\"images/vignette_"+number+".png\"/>");
       });
       GEvent.addListener(marker, "mouseout", function() {
         map.closeInfoWindow();
       });

       return marker;
     }

    function wheelevent(e)
    {
        if (!e) e = window.event;
        if (e.preventDefault) e.preventDefault();
        e.returnValue = false;
    }
    function loadMap() {
      if (GBrowserIsCompatible()) {
        var mapDiv = document.getElementById("GoogleMap");
        map = new GMap2(mapDiv);
        GEvent.addDomListener(mapDiv, "DOMMouseScroll", wheelevent);
        mapDiv.onmousewheel = wheelevent;
        map.enableScrollWheelZoom(); 
        map.addControl(new GOverviewMapControl());
        var marker = new GLatLng(28.637267,77.237492);
        map.setCenter(marker, 13,G_HYBRID_MAP);
        map.addOverlay(createMarker("1",28.612979,77.228147, 28.612932,77.229413));map.addOverlay(createMarker("2",28.65509,77.236751, 28.655759,77.237792));map.addOverlay(createMarker("5",28.650689,77.233458));
      }
    }