var oldLink = null;

function setActiveStyleSheet(link, title) {

  var i, a, main;

  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {

    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {

      a.disabled = true;

      if(a.getAttribute("title") == title) a.disabled = false;

    }

  }

  if (oldLink) oldLink.style.fontWeight = 'normal';

  oldLink = link;

  link.style.fontWeight = 'bold';

  return false;

}

// This function gets called when the end-user clicks on some date.

function selected(cal, date) {

  cal.sel.value = date; // just update the date in the input field.

  if (cal.dateClicked && (cal.sel.id == "sel1" || cal.sel.id == "sel3"))

  cal.callCloseHandler();

}

function closeHandler(cal) {

  cal.hide(); // hide the calendar

  // cal.destroy();

  _dynarch_popupCalendar = null;

}

function showCalendar(id, format, showsTime, showsOtherMonths) {

  var el = document.getElementById(id);

  if (_dynarch_popupCalendar != null) {

    // we already have some calendar created

    _dynarch_popupCalendar.hide(); // so we hide it first.

  } else {

    // first-time call, create the calendar.

    var cal = new Calendar(1, null, selected, closeHandler);

    // uncomment the following line to hide the week numbers

    // cal.weekNumbers = false;

    if (typeof showsTime == "string") {

      cal.showsTime = true;

      cal.time24 = (showsTime == "24");

    }

    if (showsOtherMonths) {

      cal.showsOtherMonths = true;

    }

    _dynarch_popupCalendar = cal; // remember it in the global var

    cal.setRange(1900, 2070); // min/max year allowed.

    cal.create();

  }

  _dynarch_popupCalendar.setDateFormat(format); // set the specified date format

  _dynarch_popupCalendar.parseDate(el.value); // try to parse the text in field

  _dynarch_popupCalendar.sel = el; // inform it what input field we use

  _dynarch_popupCalendar.showAtElement(el.nextSibling, "Br"); // show the calendar

  return false;

}

var MINUTE = 60 * 1000;

var HOUR = 60 * MINUTE;

var DAY = 24 * HOUR;

var WEEK = 7 * DAY;

function isDisabled(date) {

  var today = new Date();

  return (Math.abs(date.getTime() - today.getTime()) / DAY) > 10;

}

function flatSelected(cal, date) {

  var el = document.getElementById("preview");

  el.innerHTML = date;

}

function showFlatCalendar() {

  var parent = document.getElementById("display");

  var cal = new Calendar(0, null, flatSelected);

  cal.weekNumbers = false;

  cal.setDisabledHandler(isDisabled);

  cal.setDateFormat("%A, %B %e");

  cal.create(parent);

  cal.show();

}