All nice and good, but Bill Gates decided he wants to have some fancy visual effects there. If you visit it with a JavaScript enabled graphicla browser (I haven't checked accisibility etc.) or read through some discussions here you will notice that functionality or such isn't purpose of the site. So yeah, for a company which wants to do business or something it isn't right, but that some retired dude doing something fun to him (of course he didn't implement it, but asked some agency)