Linkify Twitter feed (@usernames, #hashtags and links)

twitter.linkify.js

String.prototype.linkify_tweet = function() {
    var tweet = this.replace(/[A-Za-z]+:\/\/[A-Za-z0-9-_]+\.[A-Za-z0-9-_:%&\?\/.=]+/g, function(url) { 
        var wrap = document.createElement('div');
        var anch = document.createElement('a');
        anch.href = url;
        anch.target = "_blank";
        anch.innerHTML = url;
        wrap.appendChild(anch);
        return wrap.innerHTML;
    });
    tweet = tweet.replace(/(^|\s)@(\w+)/g, '$1@<a href="http://www.twitter.com/$2" target="_blank">$2</a>');
    return tweet.replace(/(^|\s)#(\w+)/g, '$1#<a href="http://search.twitter.com/search?q=%23$2" target="_blank">$2</a>');
 };