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;
}


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();
  _dynarch_popupCalendar = null;
}

function showCalendar(id, format, showsTime, showsOtherMonths) {
  var el = document.getElementById(id);
  if (_dynarch_popupCalendar != null) {
    _dynarch_popupCalendar.hide();
  } else {

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

    if (typeof showsTime == "string") {
      cal.showsTime = true;
      cal.time24 = (showsTime == "24");
    }
    if (showsOtherMonths) {
      cal.showsOtherMonths = true;
    }
    _dynarch_popupCalendar = cal; 
    cal.setRange(1900, 2070); 
    cal.create();
  }
  _dynarch_popupCalendar.setDateFormat(format); 
  _dynarch_popupCalendar.parseDate(el.value); 
  _dynarch_popupCalendar.sel = el; 
  _dynarch_popupCalendar.showAtElement(el.nextSibling, "Br"); 

  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();
}