script_id = 1;
var maxfile = 3;
function add_file(file) {

var fileid_temp = (file.id).length;
var fileid = (file.id).substr(fileid_temp-1, 1);
var files = document.getElementById('files');
var file_box_max = document.getElementById('file_box_max');


file.style.display = 'none';


if (script_id == maxfile) {
fileid++;
file_box_max.style.display = 'block';
} else {
fileid++;
var file_box = document.getElementById('file_box' + fileid);
var new_fileform = document.createElement('input');
new_fileform.setAttribute('type', 'file');
new_fileform.setAttribute('name', 'file' + fileid);
new_fileform.setAttribute('id', 'file' + fileid);
new_fileform.setAttribute('onChange', 'add_file(this);');
file_box.appendChild(new_fileform);
}

fileid--;

files.innerHTML += '<div id="file_name' + fileid + '"><b>' + fileid + '.</b> ' + file.value + ' | <a href="#" onClick="delete_file(' + fileid + ');">Usuń</a></div>';

script_id++;

}


function delete_file(id) {
var file = document.getElementById('file' + id);
var file_name = document.getElementById('file_name' + id);
var fileid = id;
var files = document.getElementById('files');
var file_box_max = document.getElementById('file_box_max');

file.value = '';
file_name.innerHTML = 'Plik usunięty!';

script_id--;

file_box_max.style.display = 'none';
/*
if (script_id == maxfile) {
fileid++;
file_box_max.style.display = 'block';
} else {

if (file_box_max.style.display == 'block') {

*/

fileid++;

id++;
var file_box = document.getElementById('file_box');
var file = document.getElementById('file' + id);
var new_fileform_div = document.createElement('div');
fileid++;
new_fileform_div.setAttribute('id', 'file' + fileid);
file_box.appendChild(new_fileform_div);
var file_box = document.getElementById('file_box' + fileid);
var new_fileform = document.createElement('input');
new_fileform.setAttribute('type', 'file');
new_fileform.setAttribute('name', 'file' + fileid);
new_fileform.setAttribute('id', 'file' + fileid);
new_fileform.setAttribute('onChange', 'add_file(this);');
file_box.appendChild(new_fileform);


/* }
}*/

}