var markers = [
{
'latitude': 51.51383,
'longitude': -00.15246,
'name': 'Balderton street, W1'
},
{
'latitude':  51.51504,
'longitude': -00.15039,
'name': 'Barrett Street, W1'
},
{
'latitude':  51.51015,
'longitude': -0.18692,
'name': 'Bayswater Road, W2'
},
{
'latitude':  51.52113,
'longitude': -00.20921,
'name': 'Bevington Road, W10 '
},
 
 
{
'latitude':  51.51626,
'longitude': -00.18732,
'name': 'Bishops Bridge Road, W2'
},
{
'latitude':  51.49681,
'longitude': -00.14168,
'name': 'Bressenden Place, SW1'
},
 
{
'latitude':  51.51360,
'longitude': -00.13581,
'name': 'Broadwick Street, 
W1 '
},
{
'latitude':  51.50966,
'longitude': -0.08036,
'name': 'Byward Street,EC3'
},
{
'latitude':  51.53890,
'longitude': -00.14287,
'name': 'Camden High Street 176, NW1' 
},
{
'latitude':   51.46475,
'longitude': -00.16845,
'name': 'Clapham Junction/Station Approach, SW11 ' 
},
{
'latitude':   51.51149,
'longitude': -00.12346,
'name': 'Covent Garden, next to St Pauls church, WC1 ' 
},
 
];

var centerLatitude = 51.604372;  //longittude and latitude coordinates and zoom geocodes
var centerLongitude = -0.159052;
var startZoom = 13;
var description = 'London';
 
function addMarker(latitude, longitude, description) {
var marker = new GMarker(new GLatLng(latitude, longitude));
 
GEvent.addListener(marker, 'click',
function() {
marker.openInfoWindowHtml(description);
}
);
 
map.addOverlay(marker);
}
 
function init() {
if (GBrowserIsCompatible()) {
map = new GMap2(document.getElementById("map"));
map.addControl(new GSmallMapControl());
map.setCenter(new GLatLng(centerLatitude, centerLongitude), startZoom);
 
for(id in markers) {
addMarker(markers[id].latitude, markers[id].longitude, markers[id].name);
}
}
}
 
window.onload = init;
window.onunload = GUnload;

'name': 'Broadwick Street, 
W1 '