Python CGI: Hidden fields don't show up in submitted keys!

[BcNexus]

Hello all,
The search function of this forum isn't working although I found a similar question on the forum using Google, but the replies don't help me. So, forgive me please if this has been answered before.

I have a cgi program in Python that genereates an HTML page with a form with hidden fields whose values are set via the following:

##Print hidden "usernameH", "passwordH", "timeH", "checksumH", and toPageH, fields with value attribs
    print"""
    <input name="usernameH" type="hidden" id="usernameH" value="%s">
    <input name="passwordH" type="hidden" id="passwordH" value="%s">
    <input name="timeH" type="hidden" id="timeH" value="%f">
    <input name="checksumH" type="hidden" id="checksumH" value="%s"></p>
    <input name="toPageH" type="hidden" id="toPageH" value="queryPage"></p>
    <p>
    """%(usernameH, passwordH, timeH, checksumH)

The Submit action is handled with bits of javascript that follow:

<!--javascript function that returns true if username and password lengths are both greater than zero-->
 
<script language="JavaScript">
function validate() {
    if (loginForm.username.value.length > 0 && loginForm.password.value.length > 0){return true;}
    else{return false;}
    }
    </script>
 

and:

<FORM name="loginForm" ACTION="hw6mod.cgi" METHOD="POST" onsubmit=" if(!validate()){
    alert('Your username and/or password is blank.'); return false; }">

The problem is that when I Submit the form back to my cgi program and I have the code below, the usernameH and passwordH values are NOT in the keys!

form = cgi.FieldStorage()
myKeys = form.keys()
def printKeys(myKeys):
    for key in myKeys:
        print """<p>key: %s, value: %s type: %s</p>"""%(key, form[key].value, type(form[key].value))   
 

What's going wrong?

Thanks!