Ayuda ¿como se hace el protector de link para robots estilo identi en php ?

http://foro-vip.com/1.php

<link rel="stylesheet" type="text/css" href="http://foro-vip.com//css/jquery-ui.css?1341301048"/> /* Archivo CSS para JqueryUI - Le da estilo al boton y popup de errores dentro de la pagina */
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
/* Libreria Jquery */
<script type="text/javascript" src="http://foro-vip.com//js/jquery-ui-1.8.23.custom.min.js"></script>
/* Libreria JqueryUI */

<script type="text/javascript" src="http://foro-vip.com//js/aes.js"></script> /* Utilizado para cifrar, descifrar, generar keys, etc, creo que no es utilizado ? */
<script type="text/javascript" src="http://foro-vip.com//js/acciones2.js"></script> */* La mayoria son funciones para el foro vbulletin, pero al final encontramos lo que queremos. */


acciones2.js
[code=javascript]
var redirector_url = 'http://identi.li/u.php?u=';

function linkify(text) {
 * *if (text) {
 * * * *text = text.replace(/((https?\:\/\/)|(www\.))(\S+)(\w{2,4})(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/gi, function (url) {
 * * * * * *var full_url = url;
 * * * * * *if (!full_url.match('^https?:\/\/')) {
 * * * * * * * *full_url = 'http://' + full_url;
 * * * * * *}
 * * * * * *fullurl = $.trim(full_url);
 * * * * * *url = $.trim(url);
 * * * * * *return '<a target="_blank" rel="nofollow" href="' + redirector_url + full_url + '">' + url + '</a><br/>';
 * * * *});
 * *}
 * *return text;
}
var timerinterval = 0;
var t_spoiler = 10;
var frame_change = 0;
cdown = {
 * *spl: {},
 * *time: 5,
 * *load: function () {
 * * * *var obj = $('.contador');
 * * * *var txt = '';
 * * * *if (t_spoiler <= this.time && t_spoiler > 0) t_spoiler = t_spoiler - 1;
 * * * *if (t_spoiler == this.time) txt = 'Click en Publicidad';
 * * * *else if (t_spoiler == 0) txt = 'Click aqu&iacute; para continuar';
 * * * *else if (t_spoiler < this.time) txt = 'Espere ' + t_spoiler + ' seg. ';
 * * * *obj.html(txt);
 * * * *if (t_spoiler <= 0) {
 * * * * * *clearInterval(timer_interval);
 * * * * * *$('#my-dialog').dialog('close');
 * * * * * *_decrypt.open();
 * * * *}
 * *},
 * *frame: function () {
 * * * *frame_change++;
 * * * *t_spoiler = this.time
 * * * *cdown_start();
 * *}
}
cdown_start = function () {
 * *if (frame_change > 1) {
 * * * *frame_change = 0;
 * * * *timer_interval = setInterval("cdown.load()", 1000);
 * *}
}
var _open_ads = function () {
 * *var obj = $('#my-dialog');
 * *var frame = '<iframe onload="cdown.frame()" id="frame_publi" width="600" height="300" src="http://wwww.identi.li/popup.php"></iframe>';
 * *dialog_conf.width = 700;
 * *obj.dialog({
 * * * *title: 'Click en la publicidad &raquo; Esperar ' + cdown.time + ' seg'
 * *});
 * *obj.html(frame), obj.dialog(dialog_conf);
 * *obj.dialog("option", "buttons", [{
 * * * *text: 'Click en Publicidad',
 * * * *"class": 'ui-button-negative contador floatR'
 * *}]);
 * *obj.dialog("open");
 * *$('.ui-dialog-titlebar-close').remove();
 * *$('frame_publi').live(function () {
 * * * *$('a').attr('target', '_self');
 * *})
 * *$('.ui-dialog, #frame_publi,.ui-widget-overlay').bind("contextmenu", function (e) {
 * * * *return false;
 * *});
}
var _decrypt = {
 * *hash: {},
 * *objeto: {},
 * *links: function () {
 * * * *$('div #decrypt').click(function () {
 * * * * * *if (!$(this).hasClass('block')) {
 * * * * * * * *_decrypt.objeto = $(this);
 * * * * * * * *if (global.pauth != 1 && $.cookie('ads_accepted') == null) ventanaSecundaria();
 * * * * * * * *else _decrypt.open();
 * * * * * *}
 * * * *});
 * *},
 * *open: function () {
 * * * *var elem = this.objeto.parent().find('#hide'),
 * * * * * *content = elem.html();
 * * * *this.objeto.addClass('ui-button-positive');
 * * * *this.objeto.unbind();
 * * * *elem.html(content).slideDown();
 * *}
}
$(document).on('ready', function () {
 * *$('.post_body a, .comment-content a').attr('target', '_blank');
 * *_decrypt.links();
});

function getRandom(variablea, variableb) {
 * *return Math["floor"](Math["random"]() * (variableb - variablea + 1)) + variablea;
};
var pconfig = {
 * *time: getRandom(12, 16)
};
var t_spoiler = pconfig["time"];
var hija = null;
var timer = 0;
var publi_open = 0;
var publi_closed = 0;

function ventanaSecundaria() {
 * *$("div #decrypt")["addClass"]("block");
 * *t_spoiler = pconfig["time"];
 * *publi_closed = 0;
 * *publi_open = 0;
 * *hija = window["open"](global["boardurl"] + "/popup.php", "ventana1", "width=450,height=425,scrollbars=0,toolbar=no,directories=no,menubar=no,status=no,top=0,left=0");
 * *timer = window["setInterval"]("contador()", 1000);
};

function contador() {
 * *var variable14 = _decrypt["objeto"];
 * *if (hija != null && publi_closed == 0) {
 * * * *try {
 * * * * * *var variable15 = hija["closed"];
 * * * *} catch (err) {
 * * * * * *var variable15 = true;
 * * * *};
 * * * *if (hija["closed"]) {
 * * * * * *t_spoiler = pconfig["time"];
 * * * * * *mydialog["alert"]("Haz click en un anuncio y espera con la pagina abierta", "Atencion!");
 * * * * * *variable14["val"]("Ver Links De Descarga");
 * * * * * *_decrypt["objeto"]["bind"]();
 * * * * * *variable14["removeClass"]("ui-button-negative");
 * * * * * *$("div #decrypt")["removeClass"]("block");
 * * * * * *publi_closed = 1;
 * * * * * *hija = null;
 * * * * * *clearInterval(timer);
 * * * * * *return false;
 * * * *};
 * * * *var variable16 = window["location"]["host"];
 * * * *try {
 * * * * * *var variable17 = hija["location"]["host"];
 * * * * * *var variable18 = hija["frames"]["length"];
 * * * *} catch (err) {
 * * * * * *var variable17 = "";
 * * * * * *var variable18 = 0;
 * * * *};
 * * * *if (variable16 != variable17) {
 * * * * * *variable14["addClass"]("ui-button-negative");
 * * * * * *var variable19 = "";
 * * * * * *if (t_spoiler <= pconfig["time"] && t_spoiler > 0) {
 * * * * * * * *t_spoiler = t_spoiler - 1;
 * * * * * *};
 * * * * * *if (t_spoiler == pconfig["time"]) {
 * * * * * * * *variable19 = "Click en Publicidad";
 * * * * * *} else {
 * * * * * * * *if (t_spoiler == 0) {
 * * * * * * * * * *variable19 = "Ya puedes descargar!";
 * * * * * * * *} else {
 * * * * * * * * * *if (t_spoiler < pconfig["time"]) {
 * * * * * * * * * * * *variable19 = "No cerrar la publicidad, abriendo links en " + t_spoiler + " seg. ";
 * * * * * * * * * *};
 * * * * * * * *};
 * * * * * *};
 * * * * * *variable14["val"](variable19);
 * * * * * *if (t_spoiler <= 0) {
 * * * * * * * *t_spoiler = pconfig["time"];
 * * * * * * * *publi_open = 1;
 * * * * * * * *clearInterval(timer);
 * * * * * * * *_decrypt["open"]();
 * * * * * * * *$["cookie"]("ads_accepted", 1, {
 * * * * * * * * * *expires: 180
 * * * * * * * *});
 * * * * * * * *$("div #decrypt")["removeClass"]("block");
 * * * * * * * *variable14["removeClass"]("ui-button-negative");
 * * * * * *};
 * * * *};
 * *};
};