【原创】苦恼了1个星期的DIV 滚动条置底, 今天终于实现了！！！

<script type="text/javascript" language="javascript">    //DIV的滚动条始终显示聊天窗口最底部       function  setDIV()  {            var div = document.getElementById('msg');            div.scrollTop = div.scrollHeight; //切忌setTimeout一定要放在这里，勿放onload里面，否则div的滚动条只能指在倒数第2行        setTimeout('setDIV()', 200);      }       window.onload = function() {setDIV();}</script>

<div id="msg" style="width: 420px; height: 150px; overflow-y: scroll; border: 1px solid #999; overflow: auto; background-color: #FFFFFF"></div><input type="button" value="发送" onclick="setDIV();">

(function(){ var div = document.getElementById('ff'); setInterval(function(){div.scrollTop = div.scrollHeight;},200);})();