[jQuery] Rewrite

[[EMAIL PROTECTED]]

How to rewrite this into jquery code ?
Just getting into that... so i need some example. Thanks.

                var upload_button = document.theForm.action_upload;
                var upload_url = "test";
                var append_vars = "";

                for (var i=0;i<document.theForm.length;i++)
                {
                        current = document.theForm.elements[i];
                        var new_vars = "";
                        if ((current.type == "text") || (current.type == 
"hidden"))
                        {
                                new_vars = current.name + "=" + 
encodeURIComponent(current.value);
                        }
                        else if( (current.type == "radio") || (current.type == 
"checkbox"))
                        {
                                if(current.checked)
                                {
                                        new_vars = current.name + "=" +
encodeURIComponent(current.value);
                                }
                        }

                        if (new_vars)
                        {
                                append_vars += "&" + new_vars.replace(/\./g, 
"%2E");
                        }
                }
                up.SetVariable("upload_to", upload_url + append_vars);