var SPECIAL_DAYS = {
    1 : [ 21 ],		// special days in Febryary
    2 : [ 26 ],		// special days in March
    4 : [ 1 ],		// special days in May
    10 : [ 7 ],		// special days in November
    11 : [ 16, 25 ]		// special days in December
  };

  function dateIsSpecial(year, month, day) {
    var m = SPECIAL_DAYS[month];
    if (!m) return false;
    for (var i in m) if (m[i] == day) return true;
    return false;
  };

  function dateChanged(calendar) {
    // Beware that this function is called even if the end-user only
    // changed the month/year.  In order to determine if a date was
    // clicked you can use the dateClicked property of the calendar:
    if (calendar.dateClicked) {
      // OK, a date was clicked, redirect to /yyyy/mm/dd/index.php
      var y = calendar.date.getFullYear();
      var m = calendar.date.getMonth();     // integer, 0..11
      var d = calendar.date.getDate();      // integer, 1..31
      // redirect...
      window.location = "/" + y + "/" + m + "/" + d + "/index.php";
    }
  };

  function ourDateStatusFunc(date, y, m, d) {
    if (dateIsSpecial(y, m, d))
      return "special";
    else
      return false; // other dates are enabled
      // return true if you want to disable other dates
  };