var loginpage = '/forum/forum04/prog/materials/';
var success = "/forum/forum04/prog/materials/materials.html";
var fail = "/forum/forum04/prog/materials/login-failed.html";

function loginform(form){
	var u = "attendee";
	var p = "forum04";

	form.action = success;

	if((form.username.value == u)&&(form.password.value == p)){
		document.location.href = success;
		return true;
	} else {
		document.location.href = fail;
		return false;
	}
}

if((document.referrer.indexOf(loginpage) == -1)&&(document.location.href.indexOf(success) > -1)){
	document.location.href = loginpage;
}