The JS does appear to be essentially validation. At the risk of drifting away from Perl, I'll include the JS section and the form def. I appreciate the help.

The JavaScript...

<script language="JavaScript" type="text/JavaScript">
<!--
var smtry=0;
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseI
+nt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=
+MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH
+) location.reload();
}
MM_reloadPage(true);
function resetCredFields()
{
  document.Login.PASSWORD.value = "";
}

function submitForm()
{
    // Strip target without params
      targetWithParams = document.Login.target.value;
      queryStrIdx = targetWithParams.indexOf("?");
    if ( queryStrIdx > 0 )
    {
        // there is query string
        if( targetWithParams.indexOf("SMLOCALE") <= 0 ) // SMLOCALE hs
+ been defined
          document.Login.target.value = targetWithParams ;
    }
    else {
        document.Login.target.value = document.Login.target.value ;
        alert("Final Target is " +   document.Login.target.value );
    }
   // document.Login.submit();
}

function isempid (c)
{   
    submitForm();
    if((c >= "100000") && (c <= "999999")){
           alert("You have to Enter your Network UserID and password t
+o login");
    return false;
    }
    return true;
}
//-->
</script>
<script language="JavaScript1.2" type="text/javascript">
function windowHeight()
{
    if(document.all){ //IE
          availW = document.body.clientHeight;
       }
    else{ //Netscape
          availW = window.innerHeight;
       }    
    return availW;
}
</script>
[download]

...and the form...

        <form NAME="Login" METHOD="POST" onSubmit="javascript:return i
+sempid(this.USER.value);">
        <INPUT TYPE=HIDDEN NAME="SMENC" VALUE="ISO-8859-1">
        <INPUT type=HIDDEN name="SMLOCALE" value="US-EN">
                <tr> 
                  <td align="center"> 
                      <table width="400" border="0" cellspacing="0" ce
+llpadding="1">
                        <tr> 
                          <td align="center">&nbsp;</td>
                        </tr>
                        <tr> 
                          <td bgcolor="#000000"><table width="100%" bo
+rder="0" cellspacing="0" cellpadding="0">
                              <tr bgcolor="#FFFFFF"> 
                                <td colspan="2"><table width="100%" bo
+rder="0" cellspacing="0" cellpadding="3">
                                    
                                    <tr align="center" bgcolor="#CCCCC
+C"> 
                                      <td colspan="2">
                    <script language="JavaScript" type="text/JavaScrip
+t">
                    if (smtry)
                        document.write ('<B><font color=red>Invalid Us
+erid or Password.<br></font></b>');    
                    </script>
                    <b>Please enter your Network 
                                        Username and Password</b></td>
                                    </tr>
                                    <tr bgcolor="#CCCCCC"> 
                                      <td align="right"><b>Username</b
+></td>
                                      <td align="center"> <input name=
+"USER" type="text" id="USER" size="30" maxlength="80"> 
                                      </td>
                                    </tr>
                                    <tr bgcolor="#CCCCCC"> 
                                      <td colspan="2"><img src="images
+/spacer.gif" width="1" height="1"></td>
                                    </tr>
                                    <tr bgcolor="#CCCCCC"> 
                                      <td align="right"><strong>Passwo
+rd</strong></td>
                                      <td align="center"><input name="
+password" type="password" id="password" size="30" maxlength="80"></td
+>
                                    </tr>
                                    <tr bgcolor="#CCCCCC"> 
                                      <td height="10" colspan="2"><img
+ src="images/spacer.gif" width="1" height="1"></td>
                                    </tr>
                                    <tr valign="middle" bgcolor="#CCCC
+CC"> 
                    <input type=hidden name=target value="http://my.un
+ocal.com/pls/portal30_sso/portal30_sso.wwsso_app_admin.ls_login?site2
+pstoretoken=v1.1~1363~5F3F82C6798011021FC6FD5452764DC556F2283462F74ED
+DA8157273011910A6F35FCE49D515765277DEFF3C14C90177B648B52D8F9739C33FE1
+5B1437ECF6351966AEB84D56B4FFCD0F1D7BC0265D3F7385A881AE52CE9700EE4F31E
+D216152DC9142A3C9018529A11AE3E1913AE47D4A18C4EF638FB059B3C1480FFAD397
+CCFAA2C36B17AD50809F904033D583E7B137B80CA6102C2F224235805C6756859E26E
+BF2A84888FCF95F7EBFAA0402E37E161A4A4A2F7CFC52E9F9FC58B0CEB389896221EF
+3EF144558792E96083B3714B48590A7F1B0C12AD7669AAD49223BE90B97B61C3BC933
+7F341C9288960C5E4FB9FE8D3AD5D929E84">
                         <input type=hidden name=smauthreason value="0
+">
                    <input type=hidden name=smtryno value="">
                                      <td height="45" colspan="2" alig
+n="center"><input type="submit" name="Submit" value="Login"></td>
                                    </tr>
                                  </table></td>
                              </tr>
                            </table></td>
                        </tr>
                      </table>
                    </td>
                </tr>
                </form>
[download]