var als_extend = {
  elements_x: [],
  elements_x_data: [],
};

// parallax
function alsElments_x(elm) {
  als_extend.elements_x.push({
    elm: elm,
  });
  set_elements_x();
}
function set_elements_x() {
  als_extend.elements_x_data.length = 0;
  for (let i = 0; i < als_extend.elements_x.length; i++) {
    set_elements_x_data(als_extend.elements_x[i]);
  }
}

function set_elements_x_data(elms) {
  let the_elms = document.querySelectorAll(elms.elm);
  for (let i = 0; i < the_elms.length; i++) {
    let offset_left = getElementLeft(the_elms[i]);
    let the_elms_width = the_elms[i].offsetWidth;
    let left_center = offset_left + the_elms_width / 2 - als.windowsWidth / 2;
    als_extend.elements_x_data.push({
      elm: the_elms[i],
      left_center: left_center,
    });
    the_elms[i].style.setProperty("--left", left_center);
  }
}