Array met ajax

IK heb volgende script:
<?php
include('config.php');
/**
* @author Manaus
* @copyright 2008
*/
$user->sRoom($_GET['id']);

for($i = 1; $i<11; $i++){
if($user->cPlace($i)){

}
else{
echo '$(\''.$i.'\').innerHTML = "<img src=images/vrij.png>"; ';

}
}



?>
<?php

echo'

var url = \'http://poker.manauslavens.com/getinfo.php\';
var periodical, dummy
var shit;


/* our ajax istance */
var ajax = new Ajax(url, {
update: shit,
method: \'get\',
onComplete: function() {
eval(shit);
},
onCancel: function() {


}
});


var refresh = (function() {
// dummy to prevent caching of php
dummy = $time() + $random(0, 100) + "=1&room='.$_GET['id'].'";
// we add out fancy spinner
// requests of our php plus dummy as query
ajax.request(dummy);
});

periodical = refresh.periodical(timer, this);
ajax.request($time() + "=1&room='.$_GET['id'].'");
';


?>
Alles blijft gewoon leeg, wat is er fout aan die eval?
mvg, manaus