function addmsg() {
   		var Msg        = "";
   		var nameVal    = document.msgform.name.value;
   		var emailVal   = document.msgform.email.value;
   		var email2Val  = document.msgform.email2.value;
   		var pwVal      = document.msgform.pw.value;
   		var eaokVal    = document.msgform.eaok;
   		var subjectVal = document.msgform.subject.value;
    		var bodyVal    = document.msgform.body.value;
   		var cpVal      = document.msgform.cp.value;
		var altEmail   = "";
		var emailMsg   = "";

	// Determine which program/report from the array was clicked:
for (x=0; x < eaokVal.length; x++){
	if (eaokVal[x].checked){
		altEmail = eaokVal[x].value;
		break;
	}
}


if (nameVal.length<1) {
	Msg = Msg + "- you forgot to supply a name or nickname.\n";
}

if (pwVal.length<1) {
	Msg = Msg + "- your password is missing.\n";
}

if (cpVal.length<1) {
	Msg = Msg + "- the security code is missing.\n";
}

if (subjectVal.length<1) {
	Msg = Msg + "- the subject is missing.\n";
}

if (bodyVal.length<1) {
	Msg = Msg + "- you forgot to enter your message!\n";
}

emailMsg = check_email(emailVal,1);
Msg = Msg + emailMsg;

if (altEmail=="a") {
	emailMsg = check_email(email2Val,2);
	Msg = Msg + emailMsg;
}


if ( Msg.length > 0 ) {
	Msg = "Sorry.  Your input could not be processed because:\n" + Msg;
      	alert(Msg);
      	return false;
}


}

function check_email(emailAddr,typ) {

var src = "";
if (typ==2) { src = "alternative "; }

/* The following variable tells the rest of the function whether or not
to verify that the address ends in a two-letter country or well-known
TLD.  1 means check it, 0 means don't. */

var checkTLD=1;

/* The following is the list of known TLDs that an e-mail address must end with. */

var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/i;

/* The following pattern is used to check if the entered e-mail address
fits the user@domain format.  It also is used to separate the username
from the domain. */

var emailPat=/^(.+)@(.+)$/;

/* The following string represents the pattern for matching all special
characters.  We don't want to allow special characters in the address. 
These characters include ( ) < > @ , ; : \ " . [ ] */

var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";

/* The following string represents the range of characters allowed in a 
username or domainname.  It really states which chars aren't allowed.*/

var validChars="\[^\\s" + specialChars + "\]";

/* The following pattern applies if the "user" is a quoted string (in
which case, there are no rules about which characters are allowed
and which aren't; anything goes).  E.g. "jiminy cricket"@disney.com
is a legal e-mail address. */

var quotedUser="(\"[^\"]*\")";

/* The following pattern applies for domains that are IP addresses,
rather than symbolic names.  E.g. joe@[123.124.233.4] is a legal
e-mail address. NOTE: The square brackets are required. */

var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;

/* The following string represents an atom (basically a series of non-special characters.) */

var atom=validChars + '+';

/* The following string represents one word in the typical username.
For example, in john.doe@somewhere.com, john and doe are words.
Basically, a word is either an atom or quoted string. */

var word="(" + atom + "|" + quotedUser + ")";

// The following pattern describes the structure of the user

var userPat=new RegExp("^" + word + "(\\." + word + ")*$");

/* The following pattern describes the structure of a normal symbolic
domain, as opposed to ipDomainPat, shown above. */

var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");

/* Finally, let's start trying to figure out if the supplied address is valid. */

/* Begin with the coarse pattern to simply break up user@domain into
different pieces that are easy to analyze. */

var matchArray=emailAddr.match(emailPat);

if (matchArray==null) {

/* Too many/few @'s or something; basically, this address doesn't
even fit the general mold of a valid e-mail address. */

	return("- your " + src + "email address seems incorrect (check @ and .'s)\n");

} 

var user=matchArray[1];
var domain=matchArray[2];

// Start by checking that only basic ASCII characters are in the strings (0-127).

for (i=0; i<user.length; i++) {
  if (user.charCodeAt(i)>127) {
	return("- the username in your " + src + "email address contains invalid characters.\n");
}

for (i=0; i<domain.length; i++) {
  if (domain.charCodeAt(i)>127) {
	return("- the domain name in your " + src + "email address contains invalid characters.\n");
  }
}

// See if "user" is valid 

if (user.match(userPat)==null) {
	return("- the username in your " + src + "email address doesn't seem to be valid.\n");
}

/* if the e-mail address is at an IP address (as opposed to a symbolic
host name) make sure the IP address is valid. */

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {

// this is an IP address

	for (var i=1;i<=4;i++) {
  	  if (IPArray[i]>255) {
		return("- the IP address portion of your " + src + "email address is invalid!\n");
   	  }
	}
}

// Domain is symbolic name.  Check if it's valid.
 
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
  if (domArr[i].search(atomPat)==-1) {
	return("- the domain name in your " + src + "email address does not seem to be valid.\n");
  }
}

/* domain name seems valid, but now make sure that it ends in a
known top-level domain (like com, edu, gov) or a two-letter word,
representing country (uk, nl), and that there's a hostname preceding 
the domain or country. */

if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
	return("- your " + src + "email address must end in a well-known domain or two letter " + "country.\n");
}

// Make sure there's a host name preceding the domain.

if (len<2) {
  return("- your " + src + "email address is missing a hostname!\n");
}

return "";
}
}