Google Suggest

GoogleSuggestContext.uc.xul

<?xml version="1.0"?>
<!DOCTYPE overlay>
<!--
// ==UserScript==
// @name           GoogleSuggestContext.uc.xul
// @namespace      http://d.hatena.ne.jp/Griever
// @include        main
// ==/UserScript==
 -->

<overlay id="menu_overlay"  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
	<script type="application/x-javascript" xmlns="http://www.w3.org/1999/xhtml"><![CDATA[

window.googleSuggest = {
	menu: null,
	popup: null,
	init: function()
	{
		this.menu = document.getElementById('GoogleSuggestMenu');
		this.popup = this.menu.firstChild;
		this.contextMenu = document.getElementById('contentAreaContextMenu');
		this.contextMenu.addEventListener('popupshowing', this.contextPopupshowing, false);
	},
	uninit: function()
	{
		this.contextMenu.removeEventListener('popupshowing', this.contextPopupshowing, false);
	},
	contextPopupshowing: function(event)
	{
		if (event.target != event.currentTarget) return;
		googleSuggest.menu.hidden = !gContextMenu.isTextSelected;
	},
	menuPopupshowing: function(event)
	{
		var win = gContextMenu.target.ownerDocument.defaultView;
		var sel = win.getSelection().toString();
		if (sel)
			googleSuggest.request(sel);
	},
	menuPopuphidden: function(event)
	{
		var menuitem;
		while(menuitem = this.popup.firstChild){
			this.popup.removeChild(menuitem);
		}
	},
	request: function(sel)
	{
		function createElement(tagName, attr)
		{
			var elem = document.createElement(tagName);
			if (typeof attr == 'object'){
				for (var attrName in attr){
					if (attrName == 'style' && typeof attr[attrName] == 'object'){
						for (var styleName in attr[attrName]){
							elem.style[styleName] = attr[attrName][styleName];
						}
					}else{
						elem.setAttribute(attrName, attr[attrName]);
					}
				}
			}
			return elem;
		}
		var url = 'http://www.google.co.jp/complete/search?output=toolbar&q=' + encodeURIComponent(sel);

		var x = new XMLHttpRequest();
		x.open('get', url, true);
		x.onreadystatechange = function ()
		{
			if (x.readyState == 4 && x.status == 200){
				var res = x.responseXML;
				if (!res.getElementsByTagName('CompleteSuggestion')[0]){
					googleSuggest.popup.hidePopup();
					googleSuggest.menu.hidden = true;
					return;
				}
				var suggestion = Array.slice(res.getElementsByTagName('suggestion'));
				var num_queries = Array.slice(res.getElementsByTagName('num_queries'));
				suggestion.forEach(function(sug, index){
					var value = num_queries[index].getAttribute('int')
					for(var i = 0; i < value.length/3; i++){
						value = value.replace(/^(\d+)(\d\d\d)/,"$1,$2");
					}

					googleSuggest.popup.appendChild(createElement('menuitem', {
						label: sug.getAttribute('data'),
						acceltext: value,
						onclick: 'checkForMiddleClick(this, event)',
						oncommand: "openUILink('http://www.google.co.jp/search?hl=ja&safe=off&q=' + encodeURIComponent(this.label), event);"
					}));
				});
			}
		}
		x.send(null)
	},
};
setTimeout(function(){
	googleSuggest.init();
	window.addEventListener('unload', function(){
		googleSuggest.uninit();
	}, false);
}, 1000);
	]]></script>


<!-- コンテキストメニュー -->
<popup id="contentAreaContextMenu">
	<menu label="Google Suggest"
		id="GoogleSuggestMenu"
		class="menu-iconic"
		image="moz-anno:favicon:http://www.google.co.jp/favicon.ico"
		accesskey="G"
		insertbefore="context-searchselect">
		<menupopup id="GoogleSuggestPopup"
			onpopupshowing="googleSuggest.menuPopupshowing(event);"
			onpopuphidden="googleSuggest.menuPopuphidden(event);"/>
	</menu>
</popup>
</overlay>

愛用させて頂いておりましたが、ひと月程前から、うまく動作しなくなりました。
語句を選択し、右クリックメニューから「Google Suggest(G)」 を選択しても、結果のサブメニューが表示されません。
お手数ですが、よろしければ修正をお願いできませんでしょうか。

なお、使用環境は以下の通りです。
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0
userChromeJS 1.5
Sub-Script/Overlay Loader v3.0.40mod