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    Good point - for tiny things, the jQuery library may be overkill. As soon as you go into something more complex than "hide this on click", jQuery saves you (as a developer) quite a lot of hassle - simplifies working with the elements and provides baseline cross-browser compatibility (even for IE6 - before jQ, this was a source of endless frustration).At 17KB, it's not really a bandwith hog. Moreover, if you load the library from Google, people may already have it loaded, so no additional request is needed: encosia.com/2008/12/10/… Commented Sep 10, 2010 at 10:15