function initializeMainMap() {
              if (GBrowserIsCompatible()) {
                var map = new GMap2(document.getElementById("map_canvas"));
                map.setCenter(new GLatLng(55.547113,-2.011685), 9);
                
                map.addControl(new GSmallMapControl());
                map.enableScrollWheelZoom();
                map.setMapType(G_NORMAL_MAP);
                
                
var head_office = new GMarker(new GLatLng(55.790699,-2.020164));
                GEvent.addListener(head_office, 'click', function(){
                    head_office.openInfoWindowHtml('<div><p>3 Windmill Way North,<br />
Ramparts Business Park,<br />
Berwick upon Tweed<br />
TD15 1TA</p></div>');
                    map.panTo(head_office.getLatLng());            
                });
                map.addOverlay(head_office);
                
                
var south_road_shop = new GMarker(new GLatLng(55.547153,-2.011523));
                GEvent.addListener(south_road_shop, 'click', function(){
                    south_road_shop.openInfoWindowHtml('<div>10 South Road,<br />Wooler<br />NE71 6NW</div>');
                    map.panTo(south_road_shop.getLatLng());            
                });
                map.addOverlay(south_road_shop);
                
                
var high_street_shop = new GMarker(new GLatLng(55.545915,-2.015358));
                GEvent.addListener(high_street_shop, 'click', function(){
                    high_street_shop.openInfoWindowHtml('<div><p>9 High Street<br />
Wooler<br />
NE71 6LD</p>
<br /></div>');
                    map.panTo(high_street_shop.getLatLng());            
                });
                map.addOverlay(high_street_shop);
                
                
var glendale_store = new GMarker(new GLatLng(55.544889,-2.010477));
                GEvent.addListener(glendale_store, 'click', function(){
                    glendale_store.openInfoWindowHtml('<div><p>Glendale Store,<br />
South Road,<br />
Wooler<br />
NE71 6NW</p></div>');
                    map.panTo(glendale_store.getLatLng());            
                });
                map.addOverlay(glendale_store);
                
                
              }
            }