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

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

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

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

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

$go2url = "http://*.act.*.com/con/user/act/**?cqq=".$qq;
    echo '<script language="javascript" type="text/javascript">';
    echo 'window.location.href="'.$go2url.'"';
    echo "</script>";