<script type="text/javascript"> 
var url = window.location.href;
var qinquan = "http://www.61fuli.com/mplay.php?mso=19793/0/0"
if (url == qinquan)
{
    alert("版权限制!");
window.location.href='http://www.61fuli.com';
}

</script>

<script type="text/javascript"> 
var url = window.location.href;
var qinquan = "http://61fuli.com/mplay.php?mso=19793/0/0"
if (url == qinquan)
{
    alert("版权限制!");
window.location.href='http://www.61fuli.com';
}

</script>

就是先取出游览器地址url  然后文本判断