function OpenTable(index) {
    for (var i = 1; i <= optionlength; i++) {
        document.getElementById("li_" + i).className = "style1"
        document.getElementById("option_" + i).style.display = "none";
    }
    document.getElementById("li_" + index).className = "style2"
    document.getElementById("option_" + index).style.display = "";
}