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dhtmlxCombo: Firefox incorrect XML

I've been trying to get your autosuggest comboBox working in a PHP website. Works on IE (no help), but not on Firefox. Using the most basic script I can:

function make_searchbox() {
// load libraries
$html = '<script src="'.$_SESSION['base_path'].'libraries/dhtmlxcommon.js"></script>';
$html .= '<script src="'.$_SESSION['base_path'].'libraries/dhtmlxcombo.js"></script>';
$html .= '<link rel="STYLESHEET" type="text/css" href="'.$_SESSION['base_path'].'styles/dhtmlxcombo.css">';

$html .='<div id="combo_zone" style="width:200px; height:30px;"></div>';
$html .='<script>';
$html .= '    window.dhx_globalImgPath="'.$_SESSION['base_path'].'images/dhtmlx/";';
$html .= 'var z=new dhtmlXCombo("combo_zone","alfa",200);';
$html .= 'z.enableFilteringMode(true,"'.$_SESSION['base_path'].'libraries/quicklist_return.php",true,true);';
$html .='</script>';

return $html;
}


with quicklist.php being:

<?php
header("Content-type: text/xml");
$html = '<?xml version="1.0" encoding="ISO-8859-1" ?>';
$html .='<complete add="true">';
$html .='<option value="1">one</option>';
print($html);
?>

I can see in Firebug that the headers are returning without any spaces before the XML tag:
<?xml version="1.0" encoding="ISO-8859-1" ?><complete add="true"><option value="1">one</option>

I've tried it with and without header call, with longer lists, with and without the encoding statement


Thanks.

a) quicklist.php miss ending </complete> tag
b) the complete@add necessary only if you want to add returned value to the existing list

Please check attached sample

Thanks, that got it. I'm posting a complete test php test file, since you don't have one on your site:

<?php
header("Content-type: text/xml");
$html = '<?xml version="1.0" encoding="ISO-8859-1" ?>';
$html .='<complete add="true">';
$html .='<option value="1">one</option>';
$html .='<option value="2">two</option>';
$html .='<option value="3">three</option>';
$html .='<option value="4">four</option>';
$html .='<option value="5">five</option>';
$html .='<option value="6">six</option>';
$html .='<option value="7">seven</option>';
$html .='<option value="8">eight</option>';
$html .='<option value="9">nine</option>';
$html .='<option value="10">ten</option>';
$html .='</complete>';
 
 print($html);
 
?>