When using Firefox, you'll have noticed that when you open a new tab, it's usually a blank one.
To get more out of this intranet, you can install a Firefox plug-in that will load your default home-page in any new tab or window that you open, thus giving you quicker access to the most commonly used pages in that new window/tab.
For the plug-in, go here (with Firefox): New Tab Homepage Plug-in