Add links to each other in search engines. Including multiple search modes.
提供了一键切换百度、谷歌、谷歌镜像、bing、360搜索、搜狗的切换.特别声明，是从下面这个脚本修改而来，主要是改了样式。https://greasyfork.org/zh-CN/scripts/396939-site-switcher