How to build a custom tab navigation in jquery?

I am trying to build a navigation/menu system in which users can create custom tabs similar to yahoo mail. To be more descriptive, a user would have a fixed set of tabs when on the menu and th开发者_StackOverflowen add tabs to the menu and navigate freely within tabs keeping context.

I would prefer to do this in jquery but am open to other frameworks as well.

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check out jquery tools. I haven't yet used it in production, but I've played around with their tabs and found it was extremely simple to set up.