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Prototype Javascript Framework Utility

Link text
$ http://www.prototypejs.org/api/utility/dollar
$$ http://www.prototypejs.org/api/utility/dollar-dollar
$A http://www.prototypejs.org/api/utility/dollar-a
$F http://www.prototypejs.org/api/utility/dollar-f
$H http://www.prototypejs.org/api/utility/dollar-h
$R http://www.prototypejs.org/api/utility/dollar-r
$w http://www.prototypejs.org/api/utility/dollar-w
Try.these http://www.prototypejs.org/api/utility/try-these
document.getElementsByClassName http://www.prototypejs.org/api/utility/getElementsByClassName