UPD: fixed IE compatibility issue (thanks Kevin – Sep 19 2008 / 6pm) UPD: setPercentage now parses the targetPercentage to an Integer to avoid infinite loop (thanks Jack – Sep 07 2008 / 9pm) UPD: Moved from Event.Observe(window, ‘load’, fn) to document.observe(‘dom:loaded’, fn) in order to force people to use an up to date Prototype release. UPD: setPercentage now takes an overrideQueue param. If