function div_toggle(div_id) {
  if ($(div_id).css("display") == "none") {
    $(div_id).css("display", "block");
  }
  else {
    $(div_id).css("display", "none");
  }
  return false;
}

$(document).ready(function() {
  $("a.sb_link").click(function() {
    var tmp = this.id;
    var id_split = tmp.split('-');
    nid = id_split[1];
    div_toggle("#sb_box-" + nid);
    return false;
  });
});