Dunque $.ajax non supporta il cross browsing, mentre sono riuscito a far funzionare la cosa su browser da pc, ma non da blackberry, con jsonp
Qualcuno sa a il motivo????

posto il codice dell'index:
codice:
<!DOCTYPE html>
<html>
<head>
    <title>try phpinfo</title>
    <meta id="viewport" name="viewport" content="user-scalable=no,width=device-width" />
    <link href="css/styles.css" rel="stylesheet" type="text/css" />
    <script type="text/javascript" src="js/include.js"></script>
</head>
 
<body>
    <div id="container"> 
        <div id="button">
            <h2>Press the button</h2>
            <button type="button" id="btnGPSDefault" onClick="callTheJsonp();">Print something</button>
        </div>
        <div id="areaTest"></div>
    </div>
</body>
</html>
il file php
Codice PHP:
<?php
    // get the callback function name
    $callback = '';
    if (isset($_GET['callback']))
    {
        $callback = filter_var($_GET['callback'], FILTER_SANITIZE_STRING);
    }
     
    // make an array with some random values.. so you would see that the results are fetched each time you call this script
    $array = array(
                    'item_id' => rand(1,13),
                    'price' => rand(14,17),
                    'quantity' => rand(18,30)
                     
    );
    // output this array json encoded.. the callback function being the padding (a function available in the web page)
    echo $callback . '('.json_encode($array).');';
?>
e il js
codice:
 function callTheJsonp()
     {
       
         var url = "http://www.dominiodiprova/script.php?callback=parseRequest";
     
         var script = document.createElement('script');
     
         script.setAttribute('src', url);
    
         document.getElementsByTagName('head')[0].appendChild(script);
     }


     function parseRequest(response)
     {
    	 if(response)
    		 document.getElementById('areaTest').innerHTML = 'Ok';
    	 else
    		 document.getElementById('areaTest').innerHTML = 'Failed to retreive data'; 
     }