responds send form

[serpico]

is it possible to ask for a response using the send function?
like this:

dhxList.send("inc/xml/formulieren/data/nieuwehosting.php", "get", function(response)
{ // begin send
var aa = response.xmlDoc.responseText;
alert(aa);
});  // einde send

nieuwehosting.php:

<?php
header("Content-Type: text/plain");
print_r("good");
?>