$('#element').uploadify({
    'uploader' : 'index.php?page=upload',
    'swf'      : 'javascript/uploadify.swf',
    onComplete : function(event, queueID, fileObj, response, data) {
        alert(event); alert(queueID); alert(fileObj); alert(response); alert(data);
    },
});

//Upload things
echo 'OK';

echo 'OK';