<body>
<div align="center">
<form name="form1">
<table border="0" cellspacing="0" cellpadding="0">
<tr align="center">
<td nowrap height="11">
<select name="example" size="1" onChange="redirect(this.options.selectedIndex)">
<option selected>我的办公室</option>
<option>个人事务</option>
<option>办公助理</option>
</select>
<select name="stage2" size="1" onChange="redirect1(this.options.selectedIndex)">
<option value=" " selected>今日办公</option>
<option value=" ">公共信息</option>
<option value=" ">部门信息</option>
</select>
<select name="stage3" size="1">
<option value=" " selected>任务</option>
<option value=" ">日志</option>
<option value=" ">提醒</option>
</select></table>
</form></div>
<script language="JavaScript">
<!--
var groups=document.form1.example.options.length
var group=new Array(groups)
for (i=0; i<groups; i++)
group[i]=new Array()
group[0][0]=new Option("今日办公"," ");
group[0][1]=new Option("公共信息"," ");
group[0][2]=new Option("部门信息"," ");
group[1][0]=new Option("电子邮件"," ");
group[1][1]=new Option("通讯录","");
group[1][2]=new Option("公文包","");
group[1][3]=new Option("电子贺卡","");
group[2][0]=new Option("邮政编码"," ");
group[2][1]=new Option("列车时刻","");
group[2][2]=new Option("世界时间","");
var temp=document.form1.stage2
function redirect(x){
for (m=temp.options.length-1;m>0;m--)
temp.options[m]=null
for (i=0;i<group[x].length;i++){
temp.options[i]=new Option(group[x][i].text,group[x][i].value)
}
temp.options[0].selected=true
redirect1(0)
}
var secondGroups=document.form1.stage2.options.length
var secondGroup=new Array(groups)
for (i=0; i<groups; i++) {
secondGroup[i]=new Array(group[i].length)
for (j=0; j<group[i].length; j++) {
secondGroup[i][j]=new Array() }}
secondGroup[0][0][0]=new Option("任务"," ");
secondGroup[0][0][1]=new Option("日志"," ");
secondGroup[0][0][2]=new Option("提醒"," ");
secondGroup[0][1][0]=new Option("添加"," ");
secondGroup[0][1][1]=new Option("修改"," ");
secondGroup[0][1][2]=new Option("删除"," ");
secondGroup[0][2][0]=new Option("添加部门"," ");
secondGroup[0][2][1]=new Option("添加用户"," ");
secondGroup[0][2][2]=new Option("添加信息"," ");
secondGroup[1][0][0]=new Option("添加邮件"," ");
secondGroup[1][0][1]=new Option("修改邮件"," ");
secondGroup[1][0][2]=new Option("删除邮件"," ");
secondGroup[1][1][0]=new Option("添加通讯录"," ");
secondGroup[1][1][1]=new Option("修改通讯录"," ");
secondGroup[1][1][2]=new Option("删除通讯录"," ");
secondGroup[1][2][0]=new Option("添加公文包"," ");
secondGroup[1][2][1]=new Option("修改公文包"," ");
secondGroup[1][2][2]=new Option("删除公文包"," ");
secondGroup[1][3][0]=new Option("添加贺卡"," ");
secondGroup[1][3][1]=new Option("修改贺卡"," ");
secondGroup[1][3][2]=new Option("删除贺卡"," ");
secondGroup[2][0][0]=new Option("添加邮政编码"," ");
secondGroup[2][0][1]=new Option("修改邮政编码"," ");
secondGroup[2][0][2]=new Option("删除邮政编码"," ");
secondGroup[2][1][0]=new Option("添加列车时刻"," ");
secondGroup[2][1][1]=new Option("修改列车时刻"," ");
secondGroup[2][1][2]=new Option("删除列车时刻"," ");
secondGroup[2][2][0]=new Option("添加世界时间"," ");
secondGroup[2][2][1]=new Option("修改世界时间"," ");
secondGroup[2][2][2]=new Option("删除世界时间"," ");
var temp1=document.form1.stage3
function redirect1(y){
for (m=temp1.options.length-1;m>0;m--)
temp1.options[m]=null
for (i=0;i<secondGroup[document.form1.example.options.selectedIndex][y].length;i++){
temp1.options[i]=new Option(secondGroup[document.form1.example.options.selectedIndex][y][i].text,secondGroup[document.form1.example.options.selectedIndex][y][i].value)
}
temp1.options[0].selected=true
}
//-->
</script>