function valid(){
	var user = document.logform.user.value;
	var pass = document.logform.pass.value;
	// check for a value in both fields.
	if (user == '') {
		alert('Please enter a username.');
		document.logform.user.focus();
		return false;
	}
	if (pass == '') {
		alert('Please enter a password.');
		document.logform.pass.focus();
		return false;
	}
}