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$.fn.delayHide(time, callbackArgument) {
        var self = this;
        setTimeout(function() {
                callbackArgument.call(self);
        }, time);
} 

I find that I have to use the var self = this; pattern far too often in JavaScript.

The darn magic scoping of this really gets ya.

I also had someone ask me why foo never ended up containing something:

var foo = bar(function() {
   ....
   return something;
});

It made me more worried about adding closures to Java :)