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 == "data_consegna" || cal.sel.id == "ri_data" || cal.sel.id == "rc_data" || cal.sel.id == "rf_data" || cal.sel.id == "data_prev_cons" || cal.sel.id == "ev_data" || cal.sel.id == "doc_data" || cal.sel.id == "doc_data_fine" || cal.sel.id == "data_consegna_fine" || cal.sel.id == "ri_data_fine" || cal.sel.id == "rc_data_fine" || cal.sel.id == "rf_data_fine" || cal.sel.id == "ev_data_fine" || cal.sel.id == "data_prev_cons_fine" || cal.sel.id == "start_date" || cal.sel.id == "end_date" || cal.sel.id == "friend_birth"))
		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();
	}