function isDisabledDate(date) {
  // date is a JS Date object
  if (    (date.getFullYear() > 2010) 
      || (date.getFullYear() == 2010 && date.getMonth() > 6) //month is zero-based
      || (date.getFullYear() == 2010 && date.getMonth() == 6 && date.getDate() >= 31)) {
      return false; //allow today and further
  }      
  return true; // disallow past
};