第一種：

復制代碼 代碼如下:

    <script language="javascript" type="text/javascript">
           window.location.href="login.jsp?backurl="+window.location.href;
    </script>

復制代碼 代碼如下:

    <script language="javascript">
alert("返回");
window.history.back(-1);
   </script>

復制代碼 代碼如下:

   <script language="javascript">
window.navigate("top.jsp");
  </script>

復制代碼 代碼如下:

   <script language="JavaScript">
          self.location='top.htm';
   </script>

復制代碼 代碼如下:

   <script language="javascript">
          alert("非法訪問！");
          top.location='xx.jsp';
   </script>