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dhtmlxcombo group selected

Good morning,

I'm using dhmtlxcombo group and can not do the second combo select the item.

Please could you help me, excuse my English.

Thank you,

echo "<div style='position: absolute; top:368; left:5;'>";
echo "Especificação";
echo "</div>";

echo "<div id='combo2' style='position: absolute; top:368; left:140;'>";
echo "</div>";

echo "<script>";
echo "var z2=new dhtmlXCombo('combo2','txtequi',200);";
echo "z2.loadXML('getespe.php?selecao=$txtequi');";

echo "var z=new dhtmlXCombo('combo1','txtclas',200);";
echo "z.attachChildCombo(z2,'getesp.php');";
echo "z.loadXML('getclase.php?parent=$txtclas');";
echo "</script>";

getclasse.php

<?php

header("Content-type:text/xml");
print("<?xml version=\"1.0\"?>");

include_once "../config/config.php";
require("../".FUNCOES."conecta_postgres.php");

echo "<complete>";
$result = executa_sql("select rid,rdes from rclas order by rdes");
while ($line = linha_sql($result))
     {
if ($_GET["parent"] == $line[0])
echo '<option value="'.$line[0].'" selected="1">'.$line[1].'</option>';
else
echo '<option value="'.$line[0].'">'.$line[1].'</option>';
}
echo "</complete>";

?>

getespe.php

<?php

header("Content-type:text/xml");
print("<?xml version=\"1.0\"?>");

include_once "../config/config.php";
require("../".FUNCOES."conecta_postgres.php");

$xcod = $_GET["parent"];

echo "<complete>";
$result = executa_sql("select rid,rdes from requ,rces where requ.rid = rces.resp and rces.rclas = '$xcod' order by rdes");
while ($line = linha_sql($result))
     {
if ($_GET["selecao"] == $line[0])
echo '<option value="'.$line[0].'" selected="1">'.$line[1].'</option>';
else
echo '<option value="'.$line[0].'">'.$line[1].'</option>';
}
echo "</complete>";

?>

Alex

Thanks, solved the problem,