Is it always up? I'm getting a red-exed trying it. Is it a Java applet? I've noticed I have some Java problrems...
Yes, it's a Java applet. If you are using Internet Explorer, be sure Java is allowed on at least high safety in your Tools -> Internet Options -> Security. Java must also be enabled in Tools -> Internet Options -> Advanced (Should be a Sun section...)
In Firefox, it's Tools -> Web Features -> Enable Java
In Mozilla, it's Edit -> Preferences -> Advanced -> Enable Java
Opera, Safari, and others, I have not used (except Lynx).