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// An Unobtrusive Javascript (UJS) driver based on explicit behavior definitions. Just
// put a "data-behaviors" attribute on your view elements, and then assign callbacks
// for those named behaviors via Behaviors.add.
var Behaviors = {
add: function(trigger, behavior, handler) {
document.observe(trigger, function(event) {
var element = event.findElement("*[data-behaviors~=" + behavior + "]");
if (element) handler(element, event);
});