ACC WebApp UTM REFERRER

[#1]

I am trying to come up with the best approach to capture traffic source on a WebApp..

I would like to identify if a user came through a particular campaign using UTM tags i.e ( 'utm_source','utm_medium','utm_campaign','utm_content') and possibly referrer.

Has anyone done something similar? I am thinking the only way to acomplish this is to create a script in jquery/javascript and pull the parameters from the url and store them in local ctx variables for further manipulation?

Can someone suggest an alternative approach?

[#2]

Given that noone cared to share ideas, here is my proposed approach which is working, it would be nice to know how others are achiving the same results.

<script type = "text/javascript" >
    var queryForm = function(settings) {
        var reset = settings && settings.reset ? settings.reset : false;
        var self = window.location.toString();
        var querystring = self.split("?");
        if (querystring.length > 1) {
            var pairs = querystring[1].split("&");
            for (i in pairs) {
                var keyval = pairs[i].split("=");
                if (reset || sessionStorage.getItem(keyval[0]) === null) {
                    sessionStorage.setItem(keyval[0], decodeURIComponent(keyval[1]));

                    if (pairs[i].indexOf('utm_source') > -1) {
                        document.controller.setValue('/ctx/vars/utm_source', keyval[1])
                    }

                    if (pairs[i].indexOf('utm_medium') > -1) {
                        document.controller.setValue('/ctx/vars/utm_medium', keyval[1])
                    }

                    if (pairs[i].indexOf('utm_campaign') > -1) {
                        document.controller.setValue('/ctx/vars/utm_campaign', keyval[1])
                    }

                    if (pairs[i].indexOf('utm_content') > -1) {
                        document.controller.setValue('/ctx/vars/utm_content', keyval[1])
                    }

                }
            }
        }
    }
setTimeout(function() {
    queryForm();
}, 3000);
 </script>

 The script iterates through tags found on the URL and assigns the values for our defined tags to webapp variables which can then be used to store in ACC.