function focusForm() {
	if($("username").value.length==0) {
		$("username").focus();
	} else {
		$("password").focus();
	}
}

function validateLoginForm() {
	var validated = true;
	var errHTML = "<strong>We have a problem</strong><br><br>";
	if($("username").value.length==0) {
		errHTML+="- <em>Please enter a valid username</em><br>";
		validated = false;
	}
	if($("password").value.length==0) {
		errHTML+="  - <em>Please enter a valid password</em><br>";
		validated = false;
	}
	if(!validated) {
		createErrorMessage(errHTML);
		focusForm();
		return false;
	} else {
		return true;
	}
}