For those of you that would prefer to do your work in a popup window (so it fills the screen) - add this code to a linking web page.
In <head>
<SCRIPT LANGUAGE="JavaScript">
function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=800,height=600,left = 0,top = 0');");
}</script>
And at an appropriate place in <body>
<a HREF="javascript:popUp('https://ipaddress/groupoffice')">Open Group-office</a>