var calendar = null;

function setActiveStyleSheet(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;
    }
  }
  document.getElementById("style").innerHTML = title;
  return false;
}


function selected(cal, date) {
  cal.sel.value = date; 
  if (cal.sel.id == "sel1" || cal.sel.id == "sel3") 
    cal.callCloseHandler();
}

function closeHandler(cal) {
  cal.hide();                        
  removeEvent(document, "mousedown", checkCalendar);
}

function checkCalendar(ev) {
  var el = is_ie ? getElement(ev) : getTargetElement(ev);
  for (; el != null; el = el.parentNode)    
    if (el == calendar.element || el.tagName == "A") break;
  if (el == null) {    
    calendar.callCloseHandler();
    stopEvent(ev);
  }
}
function showCalendar(id, format) {
  var el = document.getElementById(id);
  if (calendar != null) {
    calendar.hide();
  } else {    
    var cal = new Calendar(true, null, selected, closeHandler);
    calendar = cal;                  
    cal.setRange(1900, 2070);        
  }
  calendar.setDateFormat(format);    
  calendar.parseDate(el.value);     
  calendar.sel = el;                 
  calendar.showAtElement(el);        
  addEvent(document, "mousedown", checkCalendar);
  return false;
}