window.onload = function(){
var production = document.getElementById('production');
var model = document.getElementById('model');
var test = document.getElementById('test');
function getXmlHttp(){
 var xmlhttp;
 try {
 xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
 } catch (e) {
 try {
 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
 } catch (E) {
 xmlhttp = false;
 }
 }
 if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
 xmlhttp = new XMLHttpRequest();
 }
 return xmlhttp;
}
production.onchange = function() {
var val = production.value;
//alert(val);
var xmlhttp = getXmlHttp();
xmlhttp.open('GET','selectModel.php?id='+val, true);
xmlhttp.onreadystatechange = function() {
  if (xmlhttp.readyState == 4) {
     if(xmlhttp.status == 200) {
      var answer = xmlhttp.responseText;
	  test.innerHTML = answer;
      //model.innerHTML = answer;
       //alert(answer);
         }
  }
}
  xmlhttp.send(null);
}
}