code: function preventGhostClick(ev) {
          for (var i = 0; i < coordinates.length; i++) {
              var x = coordinates[i][0];
              var y = coordinates[i][1];
  
              // within the range, so prevent the click
              if (Math.abs(ev.clientX - x) < threshold && Math.abs(ev.clientY - y) < threshold) {
                  ev.stopPropagation();
                  ev.preventDefault();
                  break;
              }
          }
      }
docs: prevent clicks if they're in a registered XY region
  @param {MouseEvent} ev