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// FROM: http://davidwalsh.name/remove-utm-parameters-urls
(function() {
    var win = window;
    var removeUtms = function(){
        var location = win.location;
        if (location.search.indexOf('utm_') != -1 && history.replaceState) {
            history.replaceState({}, '', window.location.toString().replace(/(\&)utm([_a-z0-9=]+)/g, ""));
        }
    };
    ga('send', 'pageview', { 'hitCallback': removeUtms });
})();