if (typeof jQuery != 'undefined') {
	var filetypes = /\.(zip|exe|dmg|pdf|doc.*|xls.*|ppt.*|mp3|txt|rar|wma|mov|avi|wmv|flv|wav)$/i;

	jQuery('body').on('click', 'a', function(event) {
		var el = jQuery(this);
		var href = (typeof(el.attr('href')) != 'undefined' ) ? el.attr('href') : '';
		var isThisDomain = href.match(document.domain.split('.').reverse()[1] + '.' + document.domain.split('.').reverse()[0]);
		var trackers = ga.getAll();
		var callbackcount = trackers.length;

		// If we have a javascript link, bail out without tracking
		if (href.match(/^javascript:/i)) {
			return true;
		}

		var category;
		var action = 'click';
		var label;
		var fields = { 'nonInteraction': false };
		var needs_link_handling = false;

		if (href.match(/^mailto\:/i)) {
			category = 'email';
			label = href.replace(/^mailto\:/i, '');
		}
		else if (href.match(filetypes)) {
			var extension = (/[.]/.exec(href)) ? /[^.]+$/.exec(href) : undefined;
			category = 'download';
			action = 'click-' + extension[0].toLowerCase();
			label = href;
			needs_link_handling = true;
		}
		else if (href.match(/^https?\:/i) && !isThisDomain) {
			category = 'external link';
			label = href;
			fields.nonInteraction = true;
			needs_link_handling = true;
		}
		else if (href.match(/^tel\:/i)) {
			category = 'telephone';
			label = href.replace(/^tel\:/i, '');
		}
		else {
			// If we didn't match any of the link types, bail out without tracking
			return true;
		}

		// If the link has a target or was middle clicked, the current page
		// won't be unloaded, so we don't need any special link handling
		if ((el.attr('target') != undefined) || (event.which == 2)) {
			needs_link_handling = false;
		}

		// If a link will load in place of the current page (like most "normal"
		// links), the ga function's asynchronous javascript might not have
		// finished executing by the time the page goes away. Setting the
		// needs_link_handling function will block the default link action
		// from happening, and set a callback that loads it once the
		// ga function is finished.
		// TODO: what if GA servers are slow/down and callback doesn't get
		// called?
		if (needs_link_handling) {
			fields['hitCallback'] = function() {
				callbackcount -= 1;
				if (callbackcount == 0) {
					// IE doesn't apply <base> to relative URLs in js...
					// ALSO jQuery migrate (purposely) doesn't report IE 11 as IE...
					// TODO: Relative URL check is poorly written. Base it off https://url.spec.whatwg.org/ instead
					var isrelativeurl = (href.search("\/\/|^\/") == -1); 
					var isIE = jQuery.browser.msie || (/Trident\/7\./).test(navigator.userAgent);
					if ((jQuery('base').attr('href') !== undefined) && isIE && isrelativeurl) {
						var fullhref = jQuery('base').attr('href') + href;
						window.location = fullhref;
					} else {
						window.location = href;
					}
				}
			};
		}

		// Actually send the analytics requests
		for (var i = 0; i < trackers.length; i++) {
			var trackername = trackers[i].get('name');
			ga(trackername+'.send', 'event', category, action, label, fields);
		}

		// If we need the special link handling, return false to stop the default link action
		if (needs_link_handling) {
			return false;
		}
		return true;
	});
}