function changedate(obj,lang)
{


var months = new Array(13);
if(lang =="en")
    {
   months["January"]  = 0;
   months["February"]  = 1;
   months["March"]  = 2;
   months["April"]  = 3;
   months["May"]  = 4;
   months["June"]  = 5;
   months["July"]  = 6;
   months["August"]  = 7;
   months["September"]  = 8;
   months["October"]  = 9;
   months["November"] = 10;
   months["December"] = 11;
   months["01"]  = "January";
   months["02"]  = "February";
   months["03"]  = "March";
   months["04"]  = "April";
   months["05"]  = "May";
   months["06"]  = "June";
   months["07"]  = "July";
   months["08"]  = "August";
   months["09"]  = "September";
   months["10"]  = "October";
   months["11"] = "November";
   months["12"] = "December";
    }
  if(lang == "de")
      {
          months["Januar"]  = 0;
   months["Februar"]  = 1;
   months["Marz"]  = 2;
   months["April"]  = 3;
   months["Mai"]  = 4;
   months["Juni"]  = 5;
   months["Juli"]  = 6;
   months["August"]  = 7;
   months["September"]  = 8;
   months["Oktober"]  = 9;
   months["November"] = 10;
   months["Dezember"] = 11;
   months["01"]  = "Januar";
   months["02"]  = "Februar";
   months["03"]  = "Marz";
   months["04"]  = "April";
   months["05"]  = "Mai";
   months["06"]  = "Juni";
   months["07"]  = "Juli";
   months["08"]  = "August";
   months["09"]  = "September";
   months["10"]  = "Oktober";
   months["11"] = "November";
   months["12"] = "Dezember";
      }

    var str_day = obj.value.split(". ");
    var str = str_day[1].split(" ");

  //var key = str['0'] +","+parseInt(months[str['1']])-1+","+str['2'];
    var d = new Date(str[1],months[str[0]],str_day[0]);

var t = new Date(d.getTime() + 86400000);
//t.setDate(d.getTime() + 86400000);
var curr_date = t.getDate();
var curr_month = t.getMonth()+1;
var curr_year = t.getFullYear();
if(curr_month<10)
    month = "0"+(t.getMonth()+1);
else
    month = (t.getMonth()+1);
if(curr_date<10)
    day = "0"+t.getDate();
else
    day = t.getDate();
 document.getElementById("CheckOutDate").value = day + ". " +
months[month] + " " + t.getFullYear();
}

function validdate(obj)
{
    var lang = document.getElementById("lang").value;

    if(document.first.CheckInDate.value == '')
        {
            if(lang == "de")
            {
                document.getElementById("errorCheckInDate").innerHTML='Bitte geben Sie ein Anreisedatum an';
            } else
                {
                    document.getElementById("errorCheckInDate").innerHTML='Please enter CheckInDate';
                }
        } else
            {
                document.getElementById("errorCheckInDate").innerHTML='';
            }
    if(document.first.CheckOutDate.value == "")
        {
            if(lang == "de")
            {
                document.getElementById("errorCheckOutDate").innerHTML='Bitte geben Sie ein Abreisedatum an';
            } else
                {
                    document.getElementById("errorCheckOutDate").innerHTML='Please enter CheckOutDate';
                }
        } else
            {
                document.getElementById("errorCheckOutDate").innerHTML='';
            }
   if((document.first.CheckInDate.value == '') || (document.first.CheckOutDate.value == ""))
       {
           return false;
       } else
           {
               return true;
           }

}