function GetCode() {
    var img = document.getElementById("CodeImg");
    img.setAttribute('src', '../ViewCodeImg.aspx?' + Math.random());
}

function SetTab(index) {
    var i;
    for (i = 1; i <= 7; i++) {
        var t = document.getElementById("ks" + i);
        t.className = "";
    }
    document.getElementById("ks" + index).className = "ks";
    document.getElementById("ks" + index).blur();
}