I have testet this in IE and it worked, but when i enabled compatibility mode in IE i got the same error as you. Do you have compatibility mode enabled?
[Edit]
I testet it a little more and it's not a compatibility mode error.
It happens when you complete the mission two times in a row.
Did it in IE, IE with compatibility mode enabled and Firefox, they all did the same.
[Edit]
(Replaced the password with qwerty)
- Code: Select all
function check(x)
{
if (x == "qwerty")
{
alert("win!");
window.location += "?lvl_password="+x;
} else {
alert("Fail D:");
}
}
It is the:
window.location += "?lvl_password="+x;
So when you completet it twice it will be:
- Code: Select all
http://www.hackthissite.org/missions/javascript/1/?lvl_password=qwerty?lvl_password=qwerty
And so on

And instead of printing: Congratulations, you have completed this challenge.
It prints: <script language="Javascript"> alert("Fail D:"); </script>
Atleast that's what i think. Can we see the server side?
