function getHTTPObject(){
 
      if (window.ActiveXObject) return new ActiveXObject("Microsoft.XMLHTTP");

      else if (window.XMLHttpRequest) return new XMLHttpRequest();

      else {
 
      alert("Your browser does not support AJAX.");

      return null;

      }
 
      }

       
 
      // Change the value of the outputText field

      function setOutput(){

      if(httpObject.readyState == 4 || httpObject.readyState == 200 ){                
              //document.getElementById('arrivaldate').innerHTML ="";       
     document.getElementById('arrivaldate').innerHTML="";
        document.getElementById("arrivaldate").innerHTML = httpObject.responseText ;  
      
      }

      }
  
          
      
      // Implement  logic
      function doOnChange(){
 
      httpObject = getHTTPObject();
 
      if (httpObject != null) {
                  
          //var url=self.location.protocol+"//"+self.location.host+"/assets/js/"  ;
          var url="http://www.shelborne.com/"+"assets/js/"  ; 
          var str= url + "setDates.php?months="+document.getElementById('arrival_mm').value + "&year="+document.getElementById('arrival_yyyy').value + "&date="+document.getElementById('arrival_dd').value  ;
          
      httpObject.open("GET",str, true);

      httpObject.send(null);

      httpObject.onreadystatechange = setOutput;
 
      }

      }
      

      var httpObject = null;