function preformatuj(datum)
   {
       return datum;
   }
   
     var errorMsg = [
      'Please insert the date in thsi format dd/mm/rrrr',
      'The day of arrival is later then the date of departure',
      'The date has already expired'
    ];
  
    function validateDate(fld) {
     var RegExPattern = /^[0,1]?\d{1}\/(([0-2]?\d{1})|([3][0,1]{1}))\/(([1]{1}[9]{1}[9]{1}\d{1})|([2-9]{1}\d{3}))$/;
      if ((fld.match(RegExPattern)) && (fld!='')) {
          return true
      } else {
          return false
      }
    }