="t18">第
种:
<script language="javascript" type="text/javascript">
window.location.href="login.jsp?backurl="+window.location.href;
</script>
第 2种:
<script language="javascript">
alert("返回");
window.history.back(-1);
</script>
第 3种:
<script language="javascript">
window.navigate("top.jsp");
</script>
第 4种:
<script language="JavaScript">
self.location='top.htm';
</script>
第 5种:
<script language="javascript">
alert("非法访问！");
top.location='xx.jsp';
</script>
