function file_list(usr_id,date_enter){
  var req = mint.Request();
  req.AddParam("usr_id", usr_id);
  req.AddParam("date_enter", date_enter);
  req.Send("upload_file_list.php", "file_list_id");
}
function del_file(usr_id,date_enter,file){
  var req = mint.Request();
  req.AddParam("usr_id", usr_id);
  req.AddParam("date_enter", date_enter);
  req.AddParam("file", file);
  req.Send("upload_delete_file.php", "file_list_id");
  file_list(usr_id,date_enter);
  file_list(usr_id,date_enter);
}