is a feature used by nearly all internet browsing software, that
functionality isn't working at present, it's highly likely that
it's just deactivated. To re-activate this feature is easy, but
exactly how this is done depends on the browser you are using.
exploring the options available within the 'Preferences', 'options'
or similarly titled section, within one of the menus that can usually
be accessed from the top of your browser screen. What you need to
it on to enable it.
of your browser software. There should be something in there to
help you find out how it's done. Good luck.