begin 
  ResultURL:=GetURLBase+'/'+inttostr(GetZ-1)+'/'+inttostr(GetX)+'/'+inttostr(GetY)+'.png';
  RequestHead:='User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0' + #13#10 +
    'Accept: image/png,image/*;q=0.8,*/*;q=0.5' + #13#10 +
    'Accept-Language: en-us,en;q=0.5' + #13#10 +
    'Accept-Encoding: gzip, deflate' + #13#10 +
    'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7' + #13#10 +
    'Connection: keep-alive' + #13#10 +
    'Referer: http://www.openstreetmap.org/' + #13#10;
end.