function RequiredListValidatorEvaluateIsValid(val)
{
	if (typeof(val.controltovalidate) != 'string') return false;
	var controlToValidate = document.all[val.controltovalidate];
	var childControls = controlToValidate.all;
	if (childControls!=null)
	{
		for (var i=0, len=childControls.length;i<len;++i)
		{
			if (childControls.item(i).tagName == 'INPUT' && childControls.item(i).checked)
				return true;
		}
	}
	return false;
}