按说这种操作应该是后台程序来做，前端操作的话有点窒息，主要是数据量。。亲测有效，望采纳！
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<head>
<meta charset="utf-8">
<title>无标题文档</title>
<link rel="stylesheet" type="text/css" href="CSS3/xuanxing.css" />
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/1.6.4/jquery.js"></script>
</head>
<body>
<style>
select{ width:75px font-size:12px color:#000000 font-family:'宋体' margin:auto 0px}
#select0{ background:yellow}
.select{ background:#85e785}
</style>
<script>
$(document).ready(function(e) {
$("select#select0").change(function(){
var cc = $(this).find("option:selected").attr("class")
$(this).siblings("select").find("option").hide()
$(this).siblings("select").find("option."+cc).show()
$(this).siblings("select").find("option."+cc+":first").attr("selected","selected")
})
$("select.select").change(function(){
var cid = $(this).find("option:selected").index()
$(this).siblings("select.select").each(function(){
$(this).find("option").eq(cid).attr("selected","selected")
})
})
})
</script>
<div style="width: 400px height: 20px margin:0 auto word-spacing: 0px">
<select id="select0">
<option class="op0">10mm</option>
<option class="op1">20mm</option>
<option class="op2">40mm</option>
</select>
<select class="select">
<option class="op0">8n</option>
<option class="op0">12n</option>
<option class="op0">16n</option>
<option class="op1">24n</option>
<option class="op1">28n</option>
<option class="op1">32n</option>
<option class="op2">40n</option>
<option class="op2">44n</option>
</select>
<select class="select">
<option class="op0">70mm</option>
<option class="op0">110mm</option>
<option class="op0">150mm</option>
<option class="op1">230mm</option>
<option class="op1">270mm</option>
<option class="op1">310mm</option>
<option class="op2">390mm</option>
<option class="op2">430mm</option>
</select>
<select class="select">
<option class="op0">128mm</option>
<option class="op0">190mm</option>
<option class="op0">230mm</option>
<option class="op1">310mm</option>
<option class="op1">350mm</option>
<option class="op1">390mm</option>
<option class="op2">470mm</option>
<option class="op2">510mm</option>
</select>
<select class="select">
<option class="op0">ESA0810</option>
<option class="op0">ESA1210</option>
<option class="op0">ESA1610</option>
<option class="op1">ESA2410</option>
<option class="op1">ESA2810</option>
<option class="op1">ESA3210</option>
<option class="op2">ESA4010</option>
<option class="op2">ESA4410</option>
</select>
</div>
</body>
</html>
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<script language="JavaScript" type="text/JavaScript" src="http://zhidao.baidu.com/q?ct=21&cm=14&tn=fcucommend&rn=5"></script>
天神乱漫NMP 下载的进
http://www.namipan.com/d/a0ee7444bfabb89959c4410b30921e1a79d42a37e77ae10a
http://www.namipan.com/d/90c27f235000767596409f6351a18c4facee574900ca9a3b
http://www.namipan.com/d/bdd017a6d673b5bd264093e90a15124c09dcf4e500ca9a3b
http://www.namipan.com/d/605e65763d2d4f6ee41e8d025e2874af0f68087d00e2663a
