Hello,

I recenly started with a dropdown form that get car Make, Model and Year. I have a database called "Vehicles" with 3 Tables "year", "make", "model". When you select a year the optionfield make is comming up and you can select a make but after selecting for example "Toyota" it is stuck on Please Wait...

Can somebody tell me what I am missing or what is wrong with this script?

This is my Index.php:

HTML Code:
<html>
<head>
<title>Dropdown Car Year Make Model</title>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/custom.js"></script>
<?php include_once('dropdown.php'); ?>
</head>
<body>
                <form action="" method="post">
                    <select name="drop_1" id="drop_1">
                      <option value="" selected="selected" disabled="disabled">Select a Year</option>
                      <?php getTierOne(); ?>
                    </select>
                    <span id="wait_1" style="display: none;">
                    <img alt="Please Wait" src="ajax-loader.gif"/>
                    </span>
                    <span id="result_1" style="display: none;"></span>
                    <span id="wait_2" style="display: none;">
                    <img alt="Please Wait" src="ajax-loader.gif"/>
                    </span>
                    <span id="result_2" style="display: none;"></span>
                    <span id="wait_3" style="display: none;">
                    <img alt="Please Wait" src="ajax-loader.gif"/>
                    </span>
                    <span id="result_3" style="display: none;"></span>
                </form>
</body>
</html>
Custom.js (Javascript)

Code:
$(document).ready(function() {
    $('#wait_1').hide();
    $('#drop_1').change(function(){
      $('#wait_1').show();
      $('#result_1').hide();
      $.get("dropdown.php", {
        func: "drop_1",
        drop_var: $('#drop_1').val()
      }, function(response){
        $('#result_1').fadeOut();
        setTimeout("finishAjax('result_1', '"+escape(response)+"')", 400);
      });
        return false;
    });
});
function finishAjax(id, response) {
  $('#wait_1').hide();
  $('#'+id).html(unescape(response));
  $('#'+id).fadeIn();
}
Dropdown.php

PHP Code:
<?php
//**************************************
//     Page load dropdown results     //
//**************************************
include_once('dbconnect.php');
function getTierOne()
{
    $result = mysql_query("SELECT DISTINCT year FROM vehicles order by year desc")
    or die(mysql_error());
      while($tier = mysql_fetch_array( $result ))
        {
           echo '<option value="'.$tier['year'].'">'.$tier['year'].'</option>';
        }
}
//**************************************
//     First selection results     //
//**************************************
if(isset($_GET['func']) && ($_GET['func'] == "drop_1"))  {
   drop_1($_GET['drop_var']);
}
function drop_1($drop_var)
{
    include_once('dbconnect.php');
    $result = mysql_query("SELECT DISTINCT make FROM vehicles WHERE year='$drop_var' ORDER BY make asc")
    or die(mysql_error());
    echo '<select name="drop_2" id="drop_2">
          <option value=" " disabled="disabled" selected="selected">Select Make</option>';
           while($drop_2 = mysql_fetch_array( $result ))
            {
              echo '<option value="'.$drop_2['make'].'">'.$drop_2['make'].'</option>';
            }
    echo '</select>';
    echo "<script type=\"text/javascript\">
$('#wait_2').hide();
    $('#drop_2').change(function(){
      $('#wait_2').show();
      $('#result_2').hide();
      $.get(\"dropdown.php\", {
        func: \"drop_2\",
        drop_var: $('#drop_2').val(),
        drop_var2: $('#drop_1').val()
      }, function(response){
        $('#result_2').fadeOut();
        setTimeout(\"finishAjax('result_2', '\"+escape(response)+\"')\", 400);
         });
        return false;
    });
</script>";
}
?>
In the future I will get a data file with car battery's that should match the selected make, model and year after a submit... Is this possible and how should I adjust my database and script?

Any help would be very welcome

Thanks in advance

Kind Regards