$(document).ready(function(){
        $('#file_form').submit(function(){
                    var fileData = new FormData($(this)[0]);//file (request.FILES)
                    var formData = $(this).serialize();// another data (request.POST)

                    //check if country is new
                    if ($('#obj_id').val() != '') {
                        var url = '/admin/ajax_post_file/'+$('#obj_id').val()+'/';
                    }
                    else {
                        var url = '/admin/ajax_post_file/'
                    }

                    $.ajax({
                        url: url,  //server script to process data
                        type: 'POST',
                        xhr: function() {  // custom xhr
                            var myXhr = $.ajaxSettings.xhr();
                            if(myXhr.upload){ // check if upload property exists
                                myXhr.upload.addEventListener('progress',progressHandlingFunction, false); // for handling the progress of the upload
                            }
                            return myXhr;
                        },
                        //Ajax events
                        success: postSuccess,
                        error: function(){ alert('error'); },
                        // Form data
                        data: (formData, fileData),
                        //Options to tell JQuery not to process data or worry about content-type
                        cache: false,
                        contentType: false,
                        processData: false
                    });//end ajax
                    return false;
                });//end submit

        });//end ready

        function postSuccess(data, textStatus, jqXHR){
            if (data.indexOf("<form")+1){
                $('#form_body').html(data);
            }
            else
            {
                $('#file_list').html(data);
                $('#close').click();
            }
        }
        function deleteSuccess(data){
            alert(data);
        }
        //function for progress bar
        function progressHandlingFunction(e){
            if(e.lengthComputable){
                $('progress').attr({value:e.loaded,max:e.total});
            }
        }