<Form name = "doublecombo">
<P>
<Select name = "example" size = "1" onchange = "Redirect (this. Options. selectedindex)">
<Option> Foreign javascript technology websites </option>
<Option> domestic javascript technology website </option>
<Option> famous foreign search engines </option>
</SELECT>
<Select name = "stage2" size = "1">
<Option value = "http://wsabstract.com"> website action </option>
<Option value = "http://www.dynamicdrive.com"> dynamicdrive.com </option>
<Option value = "http://javascript.internet.com"> JavaScript </option>
</SELECT>
<Input type = "button" name = "test" value = "Go! "Onclick =" Go () ">
</P>
</Form>
<SCRIPT>
<! --
VaR groups = Document. doublecombo. example. Options. Length
VaR group = new array (groups)
For (I = 0; I <groups; I ++)
Group [I] = new array ()
Group [0] [0] = New Option ("website failed action", "http://wsabstract.com ")
Group [0] [1] = New Option ("dynamicdrive.com", "http://www.dynamicdrive.com ")
Group [0] [2] = New Option ("JavaScript", "http://javascript.internet.com ")
Group [1] [0] = New Option ("Wan Xu JavaScript repository", "http://www.wanxu.com ")
Group [1] [1] = New Option ("javascript2000", "http://www.javascript2000.com ")
Group [1] [2] = New Option ("Carefree script", "http://www.51js.com ")
Group [2] [0] = New Option ("Hotbot", "http://www.hotbot.com ")
Group [2] [1] = New Option ("infoseek", "http://www.infoseek.com ")
Group [2] [2] = New Option ("excite", "http://www.excite.com ")
Group [2] [3] = New Option ("Lycos", "http://www.lycos.com ")
VaR temp = Document. doublecombo. 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
}
Function go ()
{
Location = temp. Options [temp. selectedindex]. Value
}
// -->
</SCRIPT>
