function signup_form(highlight) {
	clear_errors_and_notices();
	document.getElementById('login_form').style.display = "none";
	document.getElementById('forgot_password_form').style.display = "none";
	//document.getElementById('signup_form').style.display = "block";
	if (highlight) {
		scroll(0,0);
		new Effect.Highlight('signup_form_header',{duration: 2.0, startcolor:'#018dbb', endcolor:'#EEA240'});
	}
}

function login_form() {
	clear_errors_and_notices();
	//document.getElementById('signup_form').style.display = "none";
	document.getElementById('forgot_password_form').style.display = "none";
	document.getElementById('login_form').style.display = "block";
}

function forgot_password_form() {
	clear_errors_and_notices();
	//document.getElementById('signup_form').style.display = "none";
	document.getElementById('login_form').style.display = "none";
	document.getElementById('forgot_password_form').style.display = "block";
}

function clear_errors_and_notices() {
	if (document.getElementById('error') != null ) {
		document.getElementById('error').innerHTML = '';
		document.getElementById('error').style.display = "none";
	}
	if	(document.getElementById('notice') != null ) {
		document.getElementById('notice').innerHTML = '';
		document.getElementById('notice').style.display = "none";
	}
	if	(document.getElementById('errorExplanation') != null ) {
		document.getElementById('errorExplanation').innerHTML = '';
		document.getElementById('errorExplanation').style.display = "none";
	}
}