---AKI EL CODIGO------
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Documento sin título</title>
</head>
<script type="text/javascript">
function depart(){
var d=document.form1.submit()
//var d=document.getElementById('departamentos');
}
function prov(){
var p=document.form1.submit()
//var d=document.getElementById('departamentos');
}
</script>
<body>
<form id="form1" name="form1" action="alumnos.php" method="post" >
<h3>REGISTRO DE ALUMNOS</h3>
<table border="2" align="center">
<tr>
<td>Nombre</td>
<td><input type="text" id="txtnombre" name="txtnombre" onChange=""/></td>
</tr>
<tr>
<td>Paterno</td>
<td><input type="text" id="txtpaterno" name="txtpaterno"/></td>
</tr>
<tr>
<td>Materno</td>
<td><input type="text" id="txtmaterno" name="txtmaterno"/></td>
</tr>
<tr>
<td>Fecha de Nacimiento</td>
<td><input type="text" /></td>
</tr>
<tr>
<td>Edad</td>
<td><input type="text" disabled="disabled"/></td>
</tr>
<tr>
<td>Email</td>
<td><input type="text" id="txtemail" name="txtemail"/></td>
</tr>
<tr>
<td>Telefono</td>
<td><input type="text" id="txttelfono" name="txttelefono"/></td>
</tr>
<tr>
<td>Fecha de nacimiento</td>
<td><p>
<input type="text" name="fecha" id="fecha" />
</td>
<tr>
<td>Ciudad</td>
<td> <select id="departamentos" name="departamentos" onchange="depart()" >
<?php
$con=mysql_connect('127.0.0.1','root','');
mysql_select_db('colegio',$con);
$sql =mysql_query('select *from tb_ubigeo where not coddpto=00 and codprov=00 and coddist=00',$con);
while($row= mysql_fetch_array($sql)){
//echo "<option value=if(".$row['CODDPTO']."=$dep){ echo ".selected." }>".$row['NOMBRE']."</option>";
?>
<option <?php if($row['CODDPTO']==$_POST['departamentos']){ echo "selected";}?>><?=$row['NOMBRE']?></option>
<?php
}
?>
</select>
</td>
</tr>
<tr>
<td>Provincia</td>
<td>
<select id="provincias" name="provincias" onchange="prov()">
<?php
$dep=$_POST['departamentos'];
$sql =mysql_query("select * from tb_ubigeo where coddpto='$dep' and not codprov=1 and coddist=00",$con);
while($row= mysql_fetch_array($sql)){
echo "<option value=".$row['CODPROV']." >".$row['NOMBRE']."</option>";
}
?>
</select>
</td>
</tr>
<tr>
<td>Distrito</td>
<td><select>
<?php
/*$pro=$_POST['provincias'];
$sql =mysql_query("select * from tb_ubigeo where coddpto='$dep' and codprov='$pro' and not coddist=00",$con);
echo "<option>--SELECCIONE UN DISTRITO--</option>";
while($row= mysql_fetch_array($sql)){
echo "<option value=".$row['CODDIST']." >".$row['NOMBRE']."</option>";
}
*/
?>
</select>
</td>
</tr>
<tr>
<td>Direccion</td>
<td><input type="text" /></td>
</tr>
<tr>
<td colspan="2" align="center"><input type="button" value="REGISTRAR" /></td>
</tr>
</table>
</form>
</body>
</html>
