var calendar = null; // remember the calendar object so that we reuse it and
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.sel.id == "dateofBirth")  //   Close at Single Click
    cal.callCloseHandler();
}
function closeHandler(cal)
{
  cal.hide();                        // hide the calendar
  Calendar.removeEvent(document, "mousedown", checkCalendar);
}
function checkCalendar(ev)
{
  var el = Calendar.is_ie ? Calendar.getElement(ev) : Calendar.getTargetElement(ev);
  for (; el != null; el = el.parentNode)
    if (el == calendar.element || el.tagName == "A") break;
  if (el == null) {
    calendar.callCloseHandler();
    Calendar.stopEvent(ev);
  }
}
function showCalendar(id, format)
{
  var el = document.getElementById(id);
  if (calendar != null)
	{
    calendar.hide();                 // so we hide it first.
  } else
	{
    var cal = new Calendar(true, null, selected, closeHandler);
    calendar = cal;                  // remember it in the global var
    cal.setRange(1900, 2070);        // min/max year allowed.
    cal.create();
  }
  calendar.setDateFormat(format);    // set the specified date format
  calendar.parseDate(el.value);      // try to parse the text in field
  calendar.sel = el;                 // inform it what input field we use
  calendar.showAtElement(el);        // show the calendar below it
  Calendar.addEvent(document, "mousedown", checkCalendar);
  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;
}