加横向滚动条，上下都加。
bootstrap.
<div class="table-responsive">
<table class="table">
...
</table>
</div>
<table class="table">
...
</table>
</div>
JQUERY插件
https://github.com/avianey/jqDoubleScroll
$(document).ready(function() {
$('.double-scroll').doubleScroll();
});
$('.double-scroll').doubleScroll();
});