'click #submit-extra-times': function(e, tpl) {
    e.preventDefault();

    var s = this.s ^= 1;
    console.log();
    tpl.$('#submit-extra-times').val(s?'delete':'submit');

    var startTime = $('#datetime-start').val();
    startTime = new Date(startTime);
    var endTime = $('#datetime-end').val();
    endTime = new Date(endTime);