function(){
  var pu = location.href;
  var params = ['stuFirstName', 'stuLastName', 'stuEmail', 'ContactId'];

  if (/stuFirstName|stuLastName|stuEmail/gi.test(pu)) {

    var cp = getCurrentParams(params, pu), newPu;

    var i = 0;
    while (i < cp.length) {
      newPu = updateUrlParameter(pu, cp[i], 'redacted');
      pu = newPu;
      i++;
    }

    return newPu;
  } else {
    return pu;
  }

  function updateUrlParameter(uri, key, value) {
    var i = uri.indexOf('#');
    var hash = i === -1 ? ''  : uri.substr(i);
      uri = i === -1 ? uri : uri.substr(0, i);

    var re = new RegExp("([?&])" + key + "=.*?(&|$)", "i");
    var separator = uri.indexOf('?') !== -1 ? "&" : "?";
    if (uri.match(re)) {
      uri = uri.replace(re, '$1' + key + "=" + value + '$2');
    } else {
      uri = uri + separator + key + "=" + value;
    }

    return uri + hash;
  }

  function getCurrentParams(arr, uri){
    var cp = [];
    for (var i = 0, len = arr.length; i < len; i++) {
        !!~uri.indexOf(arr[i]) && cp.push(arr[i]);
    }

    return cp;
  }
}