vents() {
          allEvents.events.length = 0;
          displayMessage("");
        }

        function move(el, offsetX, offsetY, timeout) {
          return function(event) {
            setTimeout(function() {
              el.style.top = event.clientY + offsetY + "px";
              el.style.left = event.clientX + offsetX + "px";
            }, timeout);
          };
        }

        document.addEventListener("DOMContentLoaded", function() {
          var outer = document.getElementById("outer");
 