let cross = document.getElementById("button1");
        let input = document.getElementById("szukaj");
        let isCrossShown = false;

        function showBtn() {
            if (input.value=="") {
                cross.style.display = "none";
            }

            else {
            cross.style.display = "inline-block";
            isCrossShown = true;
            }
        }

        input.addEventListener("change", showBtn);
        input.addEventListener("keyup", showBtn);
        input.addEventListener("keydown", showBtn);

        function removeText() {
            if (isCrossShown == true) {
                input.value = "";
                isCrossShown = false;
                cross.style.display = "none";
            }
        }

        cross.addEventListener("click", removeText);