This symbol shows how to get home to the Macintosh main page:
Simply by clicking the open window away.
You also can close the window with command+w.
The pages are built up in such a way that the main page is automatically kept open while you surf through the other pages or links. By this you easily can toggle between the two pages without having to wait every time till it loads. I found that always very convinient.
If anybody knows a script by which the window closes by itself when clicking on the icon I would be very thankful to get it.
Here you can send your script