div、textarea等，都可是设置有滚动条：
y轴滚动条：overflow-Y:scroll
x轴滚动条：overflow-X:scroll
<textarea class="msg_txt" style="overflow-Y:scroll" disabled>XXXXXXXXXXXXX</textarea><div class="msg_txt" style="overflow-Y:scroll" disabled>XXXXXXXXXXXXX</div>
图片以y轴为例：
