function autoDate () {
  var tDay = new Date();
  var tMonth = tDay.getMonth()+1;
  var tDate = tDay.getDate();
  if ( tMonth < 10) tMonth = "0"+tMonth;
  if ( tDate < 10) tDate = "0"+tDate;
  document.getElementById("Departure_Date").value = tDay.getFullYear()+"-"+tMonth+"-"+tDate;
}
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}
addLoadEvent(function() {
  autoDate();
});