判断浏览器类型

js：

<script type="text/javascript">

    //------------判断浏览器-----------

    var Sys = {};

    var ua = navigator.userAgent.toLowerCase();

    var s;

    (s = ua.match(/msie ([\d.]+)/)) ? Sys.ie = s[1] :

        (s = ua.match(/firefox\/([\d.]+)/)) ? Sys.firefox = s[1] :

        (s = ua.match(/chrome\/([\d.]+)/)) ? Sys.chrome = s[1] :

        (s = ua.match(/opera.([\d.]+)/)) ? Sys.opera = s[1] :

        (s = ua.match(/version\/([\d.]+).*safari/)) ? Sys.safari = s[1] : 0;

    //------------判断浏览器-----------



    if (Sys.ie) document.write('IE: ' + Sys.ie);

    if (Sys.firefox) document.write('Firefox: ' + Sys.firefox);

    if (Sys.chrome) document.write('Chrome: ' + Sys.chrome);

    if (Sys.opera) document.write('Opera: ' + Sys.opera);

    if (Sys.safari) document.write('Safari: ' + Sys.safari);

</script>

c#：

    protected string BrowType = "ie";



    protected void Page_Load(object sender, EventArgs e)

    {

        System.Web.HttpBrowserCapabilities browser = Request.Browser;

        BrowType = browser.Browser.ToLower();

    }

前台代码调用：

                <%if (!(BrowType == "ie" || BrowType == "safari"))

                  {

                %>

                      <div style="height:40px;"></div>

                <% 

                  } 

                %>