Added check for valid ip address as domain name.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "url",
-  "version": "1.8.5",
+  "version": "1.8.6",
   "description": "A simple, lightweight url parser for JavaScript (~1.6 Kb minified, ~0.6Kb gzipped).",
   "main": "url.js",
   "repository": {

tests.js

@@ -2,6 +2,7 @@
 
 var url = 'http://rob:abcd1234@www.domain.com/path/index.html?query1=test&silly=willy#test=hash&chucky=cheese';
 var urlHttps = 'https://rob:abcd1234@www.domain.com/path/index.html?query1=test&silly=willy#test=hash&chucky=cheese';
+var urlIp = 'https://rob:abcd1234@1.2.3.4/path/index.html?query1=test&silly=willy#test=hash&chucky=cheese';
 
 module('url');
 
@@ -11,6 +12,7 @@ test('url', function() {
 
 test('domain', function() {
   deepEqual( window.url( 'domain', url ), 'domain.com' );
+  deepEqual( window.url( 'domain', urlIp ), '1.2.3.4' );
 });
 
 test('hostname', function() {

url.jquery.json

@@ -6,7 +6,7 @@
     "websanova",
     "url"
   ],
-  "version": "1.8.5",
+  "version": "1.8.6",
   "author": {
     "name": "Websanova",
     "email": "rob@websanova.com",

url.js

@@ -28,7 +28,10 @@ window.url = (function() {
         var _h = _l.hostname, _hs = _h.split('.'), _ps = _p.split('/');
 
         if (arg === 'hostname') { return _h; }
-        else if (arg === 'domain') { return _hs.slice(-2).join('.'); }
+        else if (arg === 'domain') {
+            if (/^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$/.test(_h)) { return _h; }
+            return _hs.slice(-2).join('.'); 
+        }
         //else if (arg === 'tld') { return _hs.slice(-1).join('.'); }
         else if (arg === 'sub') { return _hs.slice(0, _hs.length - 2).join('.'); }
         else if (arg === 'port') { return _l.port; }