Simple Selection Combo box MYSQL database and PHP

combobox.php

<?php
include_once('db.php');
?>

<div  style="width:50px;height: auto; float: left; "> States:</div>

<div align="left" style="width:210px;height: auto; float: left; ">

<select name="states" onChange="getCities(this.value)">

<?php

$result = mysql_query("SELECT * FROM states");

while($row=mysql_fetch_array($result))

{

echo "<option value=".$row[id].">$row[states]</option>";

}

?>

</select>

</div>

database :  

table name : states  

table id :   id

table Name : states 

states

----------------------------

id   | states 

1   | Andra

2   | Tamil Nadu

3   |  Pondicherry 

db.php

<?php

$mysql_hostname = "localhost";

$mysql_user = "test";

$mysql_password = "BJx3p2awbuTvdVwS";

$mysql_database = "test";

$prefix = "";

$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Could not connect database");

mysql_select_db($mysql_database, $bd) or die("Could not select database");

?>