function populateMap() {  

     var map = new GMap2(document.getElementById("map"));  


     map.setCenter(new GLatLng(-34.811689, 150.000801), 12);
    
         var point = new GLatLng(-34.811689, 150.000801);
         var windowInfo = 'Bungonia National Park  ';
         var marker = createMarker(point, windowInfo);

         map.addOverlay(marker);



     map.setUIToDefault();  
}

function createMarker(point, overlayText) {  
    var marker = new GMarker(point);  
    GEvent.addListener(marker, "click", function() {marker.openInfoWindowHtml(overlayText);});  
    return marker;  
}

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