DresdenAutoBooking

// ==UserScript==
// @name DresdenAutoBooking
// @namespace Violentmonkey Scripts
// @grant none
// ==/UserScript==
//

let arrayForPlaces =
    [{
        idPlace: 14,
        timeTOPlay: 69
    },
    {
        idPlace: 15,
        timeTOPlay: 72
    },
    {
        idPlace: 16,
        timeTOPlay: 75
    }, {
        idPlace: 28,
        timeTOPlay: 66
    }];


function takingPlace() {

  let currentPlace = document.getElementsByName('freeTimeContainer:free_time.place')[0];

  if (typeof(currentPlace) !== 'undefined') {

    currentPlace = currentPlace.selectedIndex;

    for (let obj in arrayForPlaces) {
       if (currentPlace === arrayForPlaces[obj].idPlace) {

       let x;
           x = document.getElementsByClassName('content')[arrayForPlaces[obj].timeTOPlay];
           if (typeof(x) !== 'undefined') {
              x = x.firstElementChild;
              x.click();
              x.form.submit();
           }
         }
      }
   }
}

takingPlace();