<!DOCTYPE html PUBLIC "//WC//DTD XHTML Transitional//EN" "
<html xmlns="<head><meta http
equiv="Content
Type" content="text/html;charset=gb
" /><title>双选择关联菜单</title></head><body><form name="doublecombo"><p><select name="example" size="
" onChange="redirect(this
options
selectedIndex)"><option>特效代码</option><option>网页语言</option><option>软件教程</option></select><select name="stage
" size="
"><option value="/texiao/shubiao">鼠标类</option><option value="/texiao/chuangkou">窗口类</option><option value="/texiao/daohang">导航类</option></select><input type="button" name="test" value="Go!"onClick="go()"></p><script><!
var groups=document
doublecombo
example
options
lengthvar group=new Array(groups)for (I=
; I<groups; I++)group[I]=new Array()group[
][
]=new Option("鼠标类"
"/texiao/shubiao")group[
][
]=new Option("窗口类"
"/texiao/chuangkou")group[
][
]=new Option("导航类"
"/texiao/daohang")group[
][
]=new Option("ASP"
"/yuyan/asp")group[
][
]=new Option("PHP"
"/yuyan/php")group[
][
]=new Option("JSP"
"/yuyan/jsp")group[
][
]=new Option("Dreamweaver"
"/ruanjian/Dreamweaver")group[
][
]=new Option("Fireworks"
"/ruanjian/Fireworks")group[
][
]=new Option("Flash"
"/ruanjian/Flash")group[
][
]=new Option("Photoshop"
"/ruanjian/Photoshop")var temp=document
doublecombo
stage
function redirect(x){for (m=temp
options
length
;m>
;m
)temp
options[m]=nullfor (I=
;I<group[x]
length;I++){temp
options[I]=new Option(group[x][I]
text
group[x][I]
value)}temp
options[
]
selected=true}function go(){location=temp
options[temp
selectedIndex]
value}//
></script></form></body></html></td></tr></table>