function checkRequiredFields(form)
{
	var fields = form.getElementsByTagName('input');
	var requiredComplete = true;
	for (var i = 0; i < fields.length; i++) {
		if (fields[i].className.indexOf('required') != -1) {
			if (fields[i].value == '') {
				fields[i].style.border = '1px solid #f00';
				requiredComplete = false;
			} else {
				fields[i].style.border = '1px solid #999';
			}
		}
	}
	return requiredComplete;
}