.left,.right{float: left;height: 297px;background-color: #ccc;}
#left_topic{height: 248px;overflow-y:hidden}
.left{width:112px; border:1px solid #333;border-right:none;}
.right{border: 1px solid #333; border-left: none;}
.right_top{width:783px;overflow-x:hidden;}
.right_content{overflow: scroll;width:800px;background-color: #fff;}
#top_topic table , #content table {width:1000px;}
.right_content{height: 265px;}
.left span, .left td, .right td{
line-height: 30px;
text-align:center;
}
.left span{display: block;}
.left span, .left td {width:110px; background-color: #ddd;}
.right td{width:10%;}
#top_topic td {background-color: #ddd;}
.left span{border: 1px solid #333;border-left: none;border-top:none;}
.left td{border: 1px solid #333; border-top:none;border-left: none}
.right_top td {border: 1px solid #333;border-left: none; border-top:none;}
.right_content td{border: 1px solid #333;border-left: none;border-top:none;}
function scroll(){
var a = document.getElementById("content").scrollLeft;
var b = document.getElementById("content").scrollTop;
document.getElementById("top_topic").scrollLeft = a;
document.getElementById("left_topic").scrollTop = b;
}

我是老大fixed

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