Linkify

// This script looks for any thing of the form
// [something not blank][a dot][something not blank],
// then matches that which comes after the dot - and possibly before a slash -
// with a list of know extensions, such as com, us, net etc.
// If it has such an extension, it is turned into a link.
// This way the script attempts to catch links like
// google.com and userscripts.org/tag/link.
// Because the script looks up extensions in a list,
// you might want to alter the list (lovligeEndelser) to fit your needs.
//
// The script is borrows a bit from the “Linkify Plus” script
// (especially the parent not a | head | etc - thing). And therefore the following
//
//- - -
//
// Loosely based on the Linkify script located at:
// http://downloads.mozdev.org/greasemo...inkify.user.js
//
// Originally written by Anthony Lieuallen of http://www.arantius.com/
// Licensed for unlimited modification and redistribution as long as
// this notice is kept intact.
//
// If possible, please contact me regarding new features, bugfixes
// or changes that I could integrate into the existing code instead of
// creating a different script. Thank you
//
//- - -
//
// for my sake you may do what you want with the script,
// but you should keep the notice by Anthony Lieuallen
//
// adam
//
// ==UserScript==
// @name Linkify ting
// @namespace http://ergosum.frac.dk/user/
// @description Turn plain text links into real clikable links. Attempts to catch links like google.com
// @include *
// @exclude http://*.google.*/*
// ==/UserScript==
try{
//dk|com|net|org|se|no|nl|us|uk|de|it|nu|edu|info

var regex = /\b(http/\/|shttp/\/){0,1}(\w(\w|-)+\.)+(dk|com|net|org|se|no|nl|us|uk|de|it|nu|edu| info)(\/\w*)*(\.\w{2,4}){0,1}(\?\w*|#\w*|&\w*)*\b/gi;

var altText, tekst, muligtLink;

var ikkeTilladteTags = ['a', 'head', 'script', 'style', 'textarea', 'title', 'option', 'pre', 'code'];//tags, hvor det der står inden i ikke skal være links
var path = "//text()[not(parent::" + ikkeTilladteTags.join(" or parent::") +")]";

altText = document.evaluate(path, document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);

for(var i=0;i<altText.snapshotLength;i++){

tekst = altText.snapshotItem(i);
muligtLink = tekst.nodeValue;

if(regex.test(muligtLink)){

//til at holde det nye link, og teksten omkring det
var span = document.createElement('span');
//tekst.parentNode.replaceChild(span, tekst);
//alert("parent:" + span.parentNode);

var lastLastIndex = 0;
regex.lastIndex = 0;
for(myArray = null; myArray = regex.exec(muligtLink); ){
//vores match gemmes
var link = myArray[0];

//alert("har fundet dette link: " + link);

span.appendChild(document.createTextNode(muligtLin k.substring(lastLastIndex, myArray.index))); //indsæt det der kommer før dette hit

var href = link;

//sætter http:// foran href, hvis der ikke er det
var prefix = '';
if(href.length > 7){
prefix = href.substring(0,7);
}
if(prefix.toLowerCase() != 'http://'){
href = 'http://' + href;
}

//skab vores link:
var a = document.createElement('a');
a.setAttribute('href', href); //giv det en href
a.appendChild(document.createTextNode(link)); //linkteksten
span.appendChild(a); //sætter ind i span

lastLastIndex = regex.lastIndex;

}

span.appendChild(document.createTextNode(muligtLin k.substring(lastLastIndex))); //insæt det der kommer efter sidste hit
tekst.parentNode.replaceChild(span, tekst);

}


}
} catch(e){alert(e);}