Untitled

<html>
<head>
<title>EX4</title>


<script type="text/javascript" >


rememberMe = false;


function setCookie(c_username, c_password)
{
    var exdate = new Date();
    exdate.setDate(exdate.getDate()+365);
    document.cookie = escape(c_username) + "=" + escape(c_password)
                          + ";expires="+exdate.toGMTString();
}


function getCookie(myName)
{
    var myStart = document.cookie.indexOf(myName + "=");
    //שם משתמש תקין
    if (myStart != -1)
    {
        myStart = myStart + myName.length + 1;
        var myEnd = document.cookie.indexOf(";",myStart);

        //סוף ה- cookie
        if (myEnd == -1)
            myEnd = document.cookie.length;

        return
             unescape(document.cookie.substring(myStart,myEnd));
    }
    //שם משתמש לא תקין
    return "";
}


function checkCookie()
{
    var firstLetter = document.form.username.value;

    //אם זה התו הראשון של המשתמש
    if (firstLetter.length == 1)
    {
        //אם קיימת התאמה לתו הראשון
        if (document.cookie.charAt(0) == firstLetter)

            {
            var myStart=0;
            var myEnd = document.cookie.indexOf("=",myStart);

            document.form.username.value = document.cookie.substring(myStart,myEnd);

            myStart = end+1;
            myEnd = document.cookie.indexOf(";",myStart);
                   if (myEnd == -1) //the end of the cookie
                     myEnd = document.cookie.length;
                     document.form.password.value = document.cookie.substring(myStart,myEnd);

            }
        else
        {
            var myStart = document.cookie.indexOf("; " + firstLetter);
            if (myStart != -1) //if this isn't  the first letter of of the first user
                {
                var newStart=myStart+2;
                var myEnd = document.cookie.indexOf("=",newStart);

                document.form.username.value = document.cookie.substring(newStart,myEnd);

                newStart = myEnd+1;
                myEnd = document.cookie.indexOf(";",newStart);
                      if (myEnd == -1) //the end of the cookie
                              myEnd = document.cookie.length;
                        document.form.password.value = document.cookie.substring(newStart,myEnd);
                }
        }

    }

}


function loginScript()
{
    var username = document.form.username.value;
    var password = getCookie(username);
    if ((rememberMe) && (password == "")) //new user name
    {
        setCookie(username,document.form.password.value);
        window.close();
    }
    else if ((password != "") && (password == document.form.password.value)) //valid username

name
    {
        window.open("EX4Page2.html");
    }
    else if ((rememberMe) && (password != document.form.password.value)) //invalid user name
    {
        alert("Invalid Username or Password!")
    }
    else
        window.close();

}


function Remember()
{
    rememberMe = !rememberMe;

}

</script>
</head>


<body>

<form name="form">
    Username: <input type="text" name="username" onkeydown="setTimeout('checkCookie

(event)',100)">
    <br><br>
    Password: <input type="password" name="password">
    <br><br>
    <input type="checkbox" onclick="Remember();">remember me on this computer
    <br><br>
    <input type="button" onclick="loginScript();" value="Login">


</form>


</body>

</html>