如何为Firefox安装自制的OpenSearch?

我自制了一个btchina的opensearch, 然后使用window.external.AddSearchProvider("G:\btchina.xml");
来安装，但是Firefox说不支持，我试了一下用window.external.AddSearchProvider安装Firefox自带的搜索引擎，发现也安不起，难道这方法有问题吗？

附上btchina.xml:
<SearchPlugin xmlns="http://a9.com/-/spec/opensearch/1.1/">
<ShortName>BtChina</ShortName>
<Description>Bit Torrent Search</Description>
<InputEncoding>utf-8</InputEncoding>
<Image width="16" height="16">data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAIAAACQkWg2AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAgY0hSTQAAeiYAAICEAAD6AAAAgOgAAHUwAADqYAAAOpgAABdwnLpRPAAAAGBJREFUOE%2B1klEKACAIQ%2B3%2BhzZBsWFWFuRf1HNu1piZrkqAqyJXKGIGhMHSObXjAFxBHKFaPGozfF0FPKpgJlfAYEvAy0gr5mB6XksCYFBqZmPD7lYR2bIw9%2BKPGA6%2FAx24JDfmMhVFywAAAABJRU5ErkJggg%3D%3D</Image>
<Url type="text/html" method="GET" template="http://search.btchina.net/search.php">
<Param name="query" value="{searchTerms}"/>
<Param name="type" value="0"/>
</Url>
<SearchForm>http://search.btchina.net/</SearchForm>
</SearchPlugin>

晕，没人弄过这个吗？

没看懂... 是指添加btchina的搜索吗?
用opensearchfox这个扩展就可以了.

<SearchPlugin xmlns="http://www.mozilla.org/2006/browser/search/" xmlns:os="http://a9.com/-/spec/opensearch/1.1/">
<os:ShortName>BT @ China</os:ShortName>
<os:Description>BT @ China 联盟首页</os:Description>
<os:InputEncoding>GB2312</os:InputEncoding>
<os:Image width="16" height="16">data:image/png;base64,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</os:Image>
<os:Url type="text/html" method="GET" template="http://search3.btchina.net/btsearch.php">
  <os:Param name="query" value="{searchTerms}"/>
  <os:Param name="type" value="0"/>
</os:Url>
</SearchPlugin>