Google is phasing out support for older browsers from 1 August.Those using IE7, Safari 3, Firefox 3.5 and their predecessors to view Gmail, Google Calendar, Talk, Docs and Sites will then lose some functions.Eventually, it warned, these web services will stop working for those sticking with older browsers.The move is part of a trend to stop the use of ageing browsers which can be insecure and not sophisticated enough to handle the latest web technologies.