在新版firefox下安装你喜爱的插件可以在其下载页面按照以下步骤进行

1) Right click the "Add to Firefox" link and choose Save Link As.
2) Right click the file and choose "Open With..." and select WinRAR
3) Edit install.rdf and change the maxVersion key from 2.0.0.* （如果原来写的是2.0.0.*）to 3.0.0.*
4) Double click the xpi file and "Open With..." Firefox