UA-outbound-link-tracking.js

var href = "http://www.domain.com";        
 
ga('send', 'event', {
    'eventCategory' : 'myCategory',
    'eventAction' : 'myAction',
    'eventLabel' : 'myLabel',
    'eventValue' : 'myValue',
    'hitCallback' : function () {
        document.location = href;
    }
});