event) {
        if (sessionStorage.getItem("refresh")) {
          sessionStorage.removeItem("refresh");
          location.reload();
        }
    };

    window.onload = function onLoad() {
        bodyDiv = document.getElementById("body");
        offsetNotScroll = Math.round(bodyDiv.offsetHeight * 0.1);

        let headerHeight = document.getElementById("header").offsetHeight;
        bodyDiv.style.height = `calc(100vh - ${headerHeight}px - 20px)`;

        let toolbarWidth = document.getElementById("