<script LANGUAGE="JavaScript">
   lists =[["--请选择--","--请选择--"],
["商场卖场","综合商场","大卖场","超市","便利店"],
["日常用品零售","食品","服装/鞋帽","钟表/眼镜","化妆品/卫生用品","文体器材","报刊图书","音像电子","珠宝首饰","工艺美术品/收藏品","照相器材"],
["汽车相关","4s店","汽车零售","汽配","汽车燃料/汽车周边","汽车养护/维修/汽车美容","汽车俱乐部"],
["电器/电子产品零售","家用电器","计算机整机/配件/周边","电话/手机/传真"],
["宾馆酒店","宾馆酒店"],
["金融","银行","证券","保险"],
["房地产相关","房地产开发经营","房产中介/咨询/评估/担保","房屋装修","家具/家装材料"], 
["生活服务","家庭服务","洗衣/干洗/洗染","婚介/婚庆","摄影扩印","职业介绍"],
["医疗卫生相关","综合医院","专科医院","妇幼保健","药品/医药器械销售","保健品销售","妇婴用品销售"],
["健身美容相关","健身中心","保龄球","高尔夫","球类运动","美容院","理发/美发","瘦身"],
["餐饮","中餐","西餐","快餐","自助餐","茶馆","咖啡馆","酒吧","风味特色小吃"],
["娱乐","夜总会","KTV/迪士高","俱乐部/沙龙","网吧","游乐园/公园","手工DIY(陶艺/缝纫/绘画等)"],
["旅游相关","旅行社","交通票务代理","旅游用品"]]
   ln = lists.length
function init(){
str = "<select name=first onchange=ssel(value)>"
for(i=0;i<ln;i++){
str += "<option value='"+i+"'>"+lists[i][0]+"</option>"
}
selit1.innerHTML = str + "</select>";
selit2.innerHTML = "<select><option>--请选择--</option></select>";
}
function ssel(x){
sln = lists[x].length
str = "<select name=second><option>--请选择--</option>"
for(i=1;i<sln;i++){
str += "<option value='"+i+"'>"+lists[x][i]+"</option>"
}
selit2.innerHTML = str + "</select>";
}
onload=init
</script>
<TABLE cellSpacing=0 cellPadding=0 width="60%" align=center border=0>
                <TR bgColor=#ffffff><TD height=26 id=selit1></TD>
                </TR>
                <TR bgColor=#ffffff>
                  <TD height=26 id=selit2></td></TR>
            </TABLE> 


看见上面的lists数组部分没有,你在那里用asp读取数据库内容,显示成它的格式就可以了.