docs: function (e) {
              // This code is inspired from https://stackoverflow.com/a/3464890
              var doc = document.documentElement,
                  pageX = e.clientX + (window.pageXOffset || doc.scrollLeft) - (doc.clientLeft || 0),
                  pageY = e.clientY + (window.pageYOffset || doc.scrollTop) - (doc.clientTop || 0);
              return { X: pageX, Y: pageY };
          }