<div id="board" style="width: 10%; height: 10%; background-color: #f0f0f0; border: 1px solid #a0a0a0; position: absolute; overflow-y: scroll; overflow-x: scroll;" onclick="resize();" onscroll="scroll2('scroll');">
aa1<br>aa2<br>aa3<br>aa4<br>aa5<br>aa6<br>aa7<br>aa8<br>aa9<br>aaA<br>aaB<br>aaC<br>aaD<br>aaE<br>aaF<br>aa0<br>
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<br>
bb1<br>bb2<br>bb3<br>bb4<br>bb5<br>bb6<br>bb7<br>bb8<br>bb9<br>bbA<br>bbB<br>bbC<br>bbD<br>bbE<br>bbF<br>bb0<br>
</div>
<div id="board" style="width: 10%; height: 10%; background-color: #f0f0f0; border: 1px solid #a0a0a0; position: absolute; overflow-y: scroll; overflow-x: scroll;" onclick="resize();" onscroll="scroll2('scroll');">
aa1<br>aa2<br>aa3<br>aa4<br>aa5<br>aa6<br>aa7<br>aa8<br>aa9<br>aaA<br>aaB<br>aaC<br>aaD<br>aaE<br>aaF<br>aa0<br>
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa<br>
bb1<br>bb2<br>bb3<br>bb4<br>bb5<br>bb6<br>bb7<br>bb8<br>bb9<br>bbA<br>bbB<br>bbC<br>bbD<br>bbE<br>bbF<br>bb0<br>
</div>