function changetab(button){
if (button == 1){
document.getElementById('air').style.display = 'block';
document.getElementById('airbutton').style.display = 'block';
document.getElementById('hotel').style.display = 'none';
document.getElementById('hotelbutton').style.display = 'none';
}
else {
document.getElementById('hotel').style.display = 'block';
document.getElementById('hotelbutton').style.display = 'block';
document.getElementById('air').style.display = 'none';
document.getElementById('airbutton').style.display = 'none';
}
}

var today       =new Date();

var date1 = new Date();
date1.setDate(today.getDate()+7);

var date2 = new Date();
date2.setDate(today.getDate()+14);

//months
months_name = new Array("Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec");    

function populate_select_days(mydate){
  myday = mydate.getDate();
  for (var i=1;i<32;i++){
    if (i == myday){
      document.write('<option selected>'+i+'</option>');
    } else {
      document.write('<option>'+i+'</option>');
    }
  }
}

function populate_select_months(mydate){
  mymonth = mydate.getMonth()+1;
  for (var i=1;i<13;i++){
    if (i == mymonth){
      document.write('<option selected value="'+i+'">' + months_name[i-1] + '</option>');
    } else {
      document.write('<option value="'+i+'">'+months_name[i-1]+'</option>');
    }
  }
}

function populate_select_years(mydate){
  myyear = mydate.getYear();
  if (myyear<2000){
	myyear=myyear+1900;
  }
  for (var i=2005;i<2011;i++){
    if (i == myyear){
      document.write('<option selected>' + i + '</option>');
    } else {
      document.write('<option >' + i + '</option>');
    }
  }
}