Hi,
There are a couple of things you can try. If the does not get much traffic then slow startup time can be part of the problem. You can solve this using the AppKeepAlive
http://www.mojoportal.com/using-the-appkeepalive-task-to-speed-up-a-low-traffic-site.aspx
If it really is the google ajax scripts that are making it slow you could install them locally
http://www.mojoportal.com/intranets-and-private-networks.aspx
Hope it helps,
Joe