搜索提取（用正则方法）网页中的代理服务器，并多线程验证是否有效。支持一键替换IE浏览器代理，免除你手动换代理的麻烦。-Search and extract (using the regular method) web proxy server, and multi thread validation is effective. Support a key to replace the IE browser agent, the trouble you manually change agent.