function doLogin() {
	// form.process.php
	form = document.forms[0];
	var alertmessage = '';
	
	// first validate if username ok
	if(form.user.value != '' && form.user.value.length < 31) {
		// username ok	
	} else {
		alertmessage += 'Username is not valid\n';
	}
	
	if(form.pass.value != '' && form.pass.value.length < 31) {
		// username ok	
	} else {
		alertmessage += 'Password is not valid';
	}
	
	if(alertmessage != '') {
		alert(alertmessage);
		return false;
	} else {
		form.action = "/medlemmer/";
		form.submit();
		return true;
	}
}