MilitaryTimeShortCode.js

(function(){
  var querystring=document.location.search;

  if(/a=er/i.test(querystring) || /nwr/i.test(querystring)) {

    $("#_fid_7").on("blur", function() {
      var oldValue = this.value;
      var newValue = oldValue
        .replace(/(\d{2})(\d{2})/g, function($0, $1, $2) {
          var hours = parseInt($1, 10);
          var minutes = parseInt($2, 10);
          if (hours < 12) {
            return hours + ":" + ("0" + minutes).substr(-2) + " AM";
          } else {
            return (hours-12) + ":" + ("0" + minutes).substr(-2) + " PM";
          }
        });

      $(this).val(newValue);
    });

  }

})();