Unblock youtube in pakistan by redirecting youtube links through playit.pk This userscript can be used on all browsers using monkeyscript / tampermonkey extensions

userscript_unblock_youtube_pakistan.js

// ==UserScript==
// @name       Unblock youtube in Pakistan
// @namespace  YoutubePakistan
// @version    0.1
// @description  This script rewrites all youtube links 
// @match      *://*/*
// @copyright  2012+, You
// ==/UserScript==


    // iframes and embeds
        
        var iframes = document.getElementsByTagName("iframe"); //array
        var regex = /youtube\.com\/(embed|v|watch)\/([\d\w]+)(.*)/i;
            for (var i=0,imax=iframes.length; i<imax; i++) {
               iframes[i].src = iframes[i].src.replace(regex,"playit\.pk/embed\?v=$2");
            }
        
        var embeds = document.getElementsByTagName("embed"); //array
            for (var i=0,imax=embeds.length; i<imax; i++) {
               embeds[i].src = embeds[i].src.replace(regex,"playit\.pk/embed\?v=$2");
            }

    // Links
        var links = document.getElementsByTagName("a"); //array
        var regexL = /youtube\.com\/(watch|embed|v)\?v=(.+)$/i;
            for (var i=0,imax=links.length; i<imax; i++) {
               links[i].href = links[i].href.replace(regexL,"playit\.pk/$1\?v=$2");
            }