function london_map() {
var w = screen.availWidth;
var h = screen.availHeight;
var popW = 800, popH = 600;
var LP = (w-popW)/2, TP = (h-popH)/2;
var map2 = window.open('http://maps.google.com/maps?oi=map&q=14+Iliffe+Yard+London+SE17+3QA','','scrollbars=no,menubar=no,height=600,width=800,resizable=yes,toolbar=no,location=no,status=no,screenX=' + LP + ',screenY=' + TP + ',top=' + TP + ',left=' + LP + '');
}

// Open window in center of screen with scroll bars
function openWindowSB(url,w,h){
var aw = screen.availWidth;
var ah = screen.availHeight;
var LP = (aw-w)/2, TP = (ah-h)/2;
var t=(document.layers)? ',screenX='+LP+',screenY='+TP: ',left='+LP+',top='+TP; //A LITTLE CROSS-BROWSER CODE FOR WINDOW POSITIONING
tb='no'; stb='no'; l='no'; mb='no'; sb='yes'; rs='yes';
var x=window.open(url, '', 'scrollbars='+sb+',width='+w+',height='+h+',toolbar='+tb+',status='+stb+',menubar='+mb+',links='+l+',resizable='+rs+t);
x.focus();
}

// Open window in center of screen without scroll bars
function openWindow(url,w,h){
var aw = screen.availWidth;
var ah = screen.availHeight;
var LP = (aw-w)/2, TP = (ah-h)/2;
var t=(document.layers)? ',screenX='+LP+',screenY='+TP: ',left='+LP+',top='+TP; //A LITTLE CROSS-BROWSER CODE FOR WINDOW POSITIONING
tb='no'; stb='no'; l='no'; mb='no'; sb='no'; rs='no';
var x=window.open(url, '', 'scrollbars='+sb+',width='+w+',height='+h+',toolbar='+tb+',status='+stb+',menubar='+mb+',links='+l+',resizable='+rs+t);
x.focus();
}