I have a new option in gCalendar to "Add" but it doesn't do anything. The style is like that of the GMail update from a couple months ago.

http://picasaweb.google.com/kdonovan11/Google/photo#5074175508859050786

Don't you get a Dropdown menu?

I've got

Create a new calendar
Add a public calendar
Add a friend's calendar
Add by URL
Import Calendar

Me too...

I just tried IE7 and it works, but my Firefox doesn't do anything.

I got the dropdown menu too.

Me as well...

Got that and it's working as well. The look is a little awkward.

I don't get dropdown

Did you try it with IE James?

NO! I'd rather go without than try to fix IE. I went through the semi-uninstall steps