<!-- Begin
function LogIn(){
loggedin=false;
username="";
password="";
username=prompt("Username:"user","Kath");
username=username.toLowerCase();
password=prompt("Password:","author");
password=password.toLowerCase();
if (username=="user", "Kath" && password=="author") { 
loggedin=true;
window.location="guide.html";
}
if (loggedin==false) {
alert("Invalid login!");
}
}
// End -->