behavior-watch-anchor.js
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behavior-watch-anchor.js
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	/**
	* @provides javelin-behavior-phabricator-watch-anchor
	* @requires javelin-behavior
	* javelin-stratcom
	* javelin-util
	* javelin-dom
	*/

	JX.behavior('phabricator-watch-anchor', function() {

	var highlighted;

	function highlight() {
	highlighted && JX.DOM.alterClass(highlighted, 'anchor-target', false);
	try {
	highlighted = JX.$('anchor-' + window.location.hash.replace('#', ''));
	JX.DOM.alterClass(highlighted, 'anchor-target', true);
	} catch (ex) {
	if (ex === JX.$.NotFound) {
	highlighted = null;
	} else {
	throw ex;
	}
	}
	}

	JX.Stratcom.listen(
	'hashchange',
	null,
	// Defer invocation so other listeners can update the document.
	function() { JX.defer(highlight); });

	JX.defer(highlight);
	});