jQuery upload

(function($)
{
    $.fn.upload = function()
    {
        return this.each(function()
        {
            $(this).attr("action", "");
            $(this).attr("target", "upload-frame");
            $(this).after("<iframe id='upload-frame' name='uploadFrame' src='#' style='display:none'></iframe>");
            $(this).submit(function getProgress () {
                $(this).hide(300);
                $(this).append("<div id='upload-progress' style='display: none;'>\n\
                                    <div id='upload-progress-bar'></div>\n\
                                    <div id='upload-progress-text'></div>\n\
                                </div>");
                $("#upload-progress").show(300);
                $.ajax({
                    type: "POST",
                    url: "verifUpload.php",
                    data: "keyFile="+$(this).children("[name=APC_UPLOAD_PROGRESS]").val(),

                    success: function (msg) {
                        if(msg != "false") {
                            var data = $.parseJSON(msg);
                            var file = data.filename;
                            var total = data.total;
                            var done = data.current;
                            var percent = Math.round(done / total * 100) + '%';
                            $("#upload-progress-text").text("Fichier : " + file);
                            $("#upload-progress-bar").text(percent);
                            $("#upload-progress-bar").animate({width: percent}, 100);
                            if(data.done != 1) {
                                getProgress();
                            }
                            else {
                                $("#upload-progress-text").append("<br/>Vitesse d'envoi : " + Math.round(data.rate / 1000) + " ko/s")
                            }
                        }
                        else {
                            getProgress();
                        }
                    }
                });
            });
        });
    };
})(jQuery);