function LangChanged(ls)
{    
    var sUsername, sPassword, sLanguage, sSignIn;
    switch (ls.selectedIndex)
    {
        case 1:
            sUsername = "用戶";
            sPassword = "密碼";
            sLanguage = "語言";
            sSignIn = "登入";
            break;
    
        case 2:
            sUsername = "戶口";
            sPassword = "密码";
            sLanguage = "语言 ";
            sSignIn = "登入";
            break;

        default:
            sUsername = "Username";
            sPassword = "Password";
            sLanguage = "Language";
            sSignIn = "Sign In";
            break;
    }
    
    var span = document.getElementById("litName");
    var strHtml = span.innerHTML;
    span.innerHTML = sUsername;

    span = document.getElementById("litPwd");
    strHtml = span.innerHTML;
    span.innerHTML = sPassword;
    
    span = document.getElementById("litLang");
    strHtml = span.innerHTML;
    span.innerHTML = sLanguage;

    span = document.getElementById("litErr");
    span.innerHTML = " ";

    span = document.form1.btnSubmit;
    span.value = sSignIn;
    
}


function SetSelectedLang(txt)
{
    var list = document.form1.lsLang;
    txt = txt-0;
    list.selectedIndex=txt-1;
}

function initJS()
{
    if (window.top != window.self) {
        window.top.location = window.location; 
    }
    document.getElementById('txtUsername').focus();    
}

function Encrypt(str) 
{
    var enc = new String;
    var temp = new Array();
    var temp2 = new Array();
    var rnd = 0;
    for (var i = 0; i < str.length; i++) {
        rnd = Math.round(Math.random() * 122) + 68;
        temp[i] = str.charCodeAt(i) + rnd;
        temp2[i] = rnd;
    }
    for (var i = 0; i < str.length; i++) {
        enc += String.fromCharCode(temp[i], temp2[i]);
    }    
    return enc;
}

function SubmitForm()
{
    var f = document.form1;
    f.txtPassword.value = Encrypt(f.txtPassword.value);    
    f.submit();
}