$(function () {
 
    $('#myUploadButton').uploader({
        url : '/some-upload-handler.php',
        inputName : 'my_upload_file', 
        data : {   // optional
            someKey : 'some value',
            anotherKey : 'some other value'
        }, 
        onStart : function () {
            $('body').append('Upload started...');
        },
        onComplete : function (response) {
            $('body').append('Upload finished. Response: '+response);
        }
    });
 
});