Javascript 跳转其他页面

<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>