Serializing parts of a form

[lhbdan]

If you have a html form with three inputs, how do you serialize two of the text fields, but not the third, and then pass the serialized data as a post variable (alongside the other variable). An example may better demonstrate what I am trying to ask:

<form name="test" action="http://www.testsite.com" method="post">
School Name:<input type="text" name="schoolname" value="">  </br>
Password: <input type="text" name="password" value=""> </br>
Your Name:<input type="text" name="firstname" value=""> </br>
<input type="submit" value="submit">
</form>

I would like the input 'schoolname' and 'password' to be serialized into a variable called 'custom' (so that when the form is filled out, the next page will receive two post variables, one called custom containing schoolname and password, and another called firstname)
Is this possible? (and could you please give me any pointers as to how this would be achieved!)
Thanks for any help!
Daniel.

[DarrylBurke]

Wrong place. This forum's for Java, not HTML.

Closing.

db