[求助]关于下拉框的问题 - 新微赢技术网

<%@LANGUAGE="VBSCRIPT" CODEPAGE="936"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>：：：回复您的多级菜单的内容：：：</title>
<SCRIPT LANGUAGE="JavaScript">
<!--
function Dsy()
{
this.Items = {};
}
Dsy.prototype.add = function(id,iArray)
{
this.Items[id] = iArray;
}
Dsy.prototype.Exists = function(id)
{
if(typeof(this.Items[id]) == "undefined") return false;
return true;
}
function change(v){
var str="0";
for(i=0;i<v;i++){ str+=("_"+(document.getElementById(s[i]).selectedIndex-1));};
var ss=document.getElementById(s[v]);
with(ss){
length = 0;
options[0]=new Option(opt0[v],opt0[v]);
if(v && document.getElementById(s[v-1]).selectedIndex>0 || !v)
{
if(dsy.Exists(str)){
ar = dsy.Items[str];
for(i=0;i<ar.length;i++)options[length]=new Option(ar[i],ar[i]);
if(v)options[1].selected = true;
}
}
if(++v<s.length){change(v);}
}
}
var dsy = new Dsy();
//第一级
dsy.add("0",["1","2","3"]);
//第二级
dsy.add("0_0",["a","b","c"]);
dsy.add("0_1",["e","f","g"]);
dsy.add("0_2",["h","i","j"]);
//-->
</SCRIPT>
<SCRIPT LANGUAGE = JavaScript>
var s=["s1","s2"];
var opt0 = ["第一级","第二级"];
function setup()
{
for(i=0;i<s.length-1;i++)
document.getElementById(s[i]).onchange=new Function("change("+(i+1)+")");
change(0);
}
//-->
</SCRIPT>
</head>
<body bgcolor="#6699cc" onload="setup()" >
<p>
</p>
<p align="center"><font size="2">第一级
<select name="11111" id="s1">
<option>第一级</option>
</select>第二级
<select name="22222" id="s2">
<option>第二级</option>
</select>
</font></p>
<tr><td width="100%" height="65"><p><span class="style8"><font size="2"><span class="style6"> </span></font></span><span class="style3">
</span></p></td>
</tr>
</body>
</html>

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