function hideCalendar () {
    var QuickCal = document.getElementById('Calendar2');
    var AdvCal = document.getElementById('ctl00_PageContent_PopUpCalendarUI_pnlCalendar1');
    var RateCal1 = document.getElementById('ctl00_PageContent_CheckRatesAvailUI_CheckInUC_pnlCalendar1');
    var RateCal2 = document.getElementById('ctl00_PageContent_CheckRatesAvailUI_CheckOutUC_pnlCalendar1');
    
    if (document.getElementById('hdnShowCalState').value != "0") {
    //Hide Quick Search Calendar when off focus
    if (QuickCal != null)QuickCal.style.display = 'none'
    
    //Hide Adv Search Calendar when off focus
    if(AdvCal != null) AdvCal.style.display = 'none';
    
    //Hide Check Rates Calendars when off focus
    if(RateCal1 != null) RateCal1.style.display = 'none';
    if(RateCal2 != null) RateCal2.style.display = 'none';
    
     document.getElementById('hdnShowCalState').value = "0";

    }
    else {
      document.getElementById('hdnShowCalState').value = "1";
    }
}