function base64(content) {
        return window.btoa(unescape(encodeURIComponent(content)));
    }
    function tableToExcel(tableID, fileName) {
        var excelContent = $("#" + tableID).html();
        //      alert(excelContent);
        var excelFile = "";
        excelFile += "";
        excelFile += "";
        excelFile += excelContent;
        excelFile += "
";
        excelFile += "";
        var link = "data:application/vnd.ms-excel;base64," + base64(excelFile);
        var a = document.createElement("a");
        a.download = fileName + ".xlsx";
        a.href = link;
        a.click();
    }