摘要：
<script type="text/javascript"> var Sys = {}; var ua = navigator.userAgent.toLowerCase(); window.ActiveXObject ? Sys.ie = ua.match(/msie ([\d.]+)/)[1] : document.getBoxObjectFor ? Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1] : window.MessageEvent &&!document.getBoxObjectFor 阅读全文
