'jQuery notification plug-in

I'm new to JS and am writing a notification plug-in. Currently I'm calling this plug-in like so:

$.notifyBar({
    cls: "error",
    html: "message"
});

By default it stays for 2 seconds and disappears. What I want to do is, if delay set to 0, then notifybar will not disappear automatically. I want it to disappear it programmatically, in ajax success function. How can I modify this plug-in to realize my idea?

http://jsfiddle.net/YQaS4/5/



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