// ==UserScript==
// @name           View Site at Hatena Bookmark Add
// @namespace      http://www.akiyan.com/
// @description    View Site at Hatena Bookmark Add
// @include        http://b.hatena.ne.jp/add?mode=confirm*
// ==/UserScript==

(function(){
  var $ = function(id){ return document.getElementById(id); };
  var $c = function(a) { return document.createElement(a) };
  var $s = function(e, s) { e.setAttribute('style', s); };
  
  $s($('body'), 'width:42%;float:left');
  location.search.match(/&url=(https?(%3A|:)[^&]+)/);
  var url = decodeURIComponent(RegExp.$1);
  if (!url)
    return;
  var e = $c('iframe');
  e.src = url;
  $s(e, 'width:53%;height:80%;float:right');
  $('container').appendChild(e);
})();