optgroup work?

Dear html editor

If I use below example, I couldn't get it with graphical form.
I want to use cascading menu.
What is a problem using this function?
Which kind of conditions I need?
Please reply on this mail.
Thanks.

mihyek@cse.unsw.edu.au


17.6 The SELECT, OPTGROUP, and OPTION elements

If I use below example, I couldn't get it with graphical form.
 

   <FORM action="http://somesite.com/prog/someprog" method="post">
    <P>
    <SELECT name="ComOS">
        <OPTGROUP label="PortMaster 3">
          <OPTION label="3.7.1" value="pm3_3.7.1">PortMaster 3 with
ComOS 3.7.1
          <OPTION label="3.7" value="pm3_3.7">PortMaster 3 with ComOS
3.7
          <OPTION label="3.5" value="pm3_3.5">PortMaster 3 with ComOS
3.5
        </OPTGROUP>
        <OPTGROUP label="PortMaster 2">
          <OPTION label="3.7" value="pm2_3.7">PortMaster 2 with ComOS
3.7
          <OPTION label="3.5" value="pm2_3.5">PortMaster 2 with ComOS
3.5
        </OPTGROUP>
        <OPTGROUP label="IRX">
          <OPTION label="3.7R" value="IRX_3.7R">IRX with ComOS 3.7R
          <OPTION label="3.5R" value="IRX_3.5R">IRX with ComOS 3.5R
        </OPTGROUP>
    </SELECT>
   </FORM>

A graphical user agent might render this as:

Received on Tuesday, 1 September 1998 08:42:58 UTC