// code for Mozilla, etc.
    if (typeof XMLHttpRequest != 'undefined')
    {
      xmlHttp = new XMLHttpRequest();
    }

    // code for IE
    else if (window.ActiveXObject)
    {
      try
      {
        xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
      }
      catch (e)
      {
        try
        {
          xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        catch (e2)
        {
          xmlHttp = false;
        }
      }
    }

    var currentUrl = "";
    var targetdiv = "";
    var xmlHttpArray = new Array;

    function loadModels(make_id)
    {
      if (make_id !== '')
      {
        var thiscount = xmlHttpArray.length;

        // code for Mozilla, etc.
        if (typeof XMLHttpRequest != 'undefined')
        {
          xmlHttpArray[thiscount] = new XMLHttpRequest();
        }

        // code for IE
        else if (window.ActiveXObject)
        {
          try
          {
            xmlHttpArray[thiscount] = new ActiveXObject("Msxml2.XMLHTTP");
          }
          catch (e)
          {
            try
            {
              xmlHttpArray[thiscount] = new ActiveXObject("Microsoft.XMLHTTP");
            }
            catch (e2)
            {
              xmlHttpArray[thiscount] = false;
            }
          }
        }

        xmlHttpArray[thiscount].open("GET", '/models_ajax.js?make_id='+make_id, true);

        changeCursor("wait");

        // Setup a function for the server to run when it's done
        xmlHttpArray[thiscount].onreadystatechange = showModels;

        // Send the request
        xmlHttpArray[thiscount].send(null);
      }
      else
      {
        removeOptions('select_model');
        addOption('select_model','','SELECT YOUR CAR MODEL...',true);
        document.getElementById('select_model').disabled = true;
      }
    }

    function showModels()
    {
      var thiscount = 0;
      for(thiscount in xmlHttpArray)
      {
        if (typeof xmlHttpArray[thiscount] != 'number')
        {
          if (xmlHttpArray[thiscount].readyState == 4)
          {
            var response = xmlHttpArray[thiscount].responseText;
            removeOptions('select_model');
            eval(response);
            document.getElementById('select_model').disabled = false;
            xmlHttpArray[thiscount] = 0;
            changeCursor("default");
          }
        }
      }
    }

    function changeCursor(cursorType)
    {
      //document.body.style.cursor = cursorType;
    }

    function removeOptions(id)
    {
      document.getElementById(id).options.length = 0;
    }

    function addOption(id,value,text,selected)
    {
      var x;
      x = document.getElementById(id).options.length;
      document.getElementById(id).options[x] = new Option(text,value);
      if (selected === true)
      {
        document.getElementById(id).selectedIndex = x;
      }
    }