<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

<!-- V1.1.3: Sandeep V. Tamhankar (stamhankar@hotmail.com)  -->
<!-- Original:  Sandeep V. Tamhankar (stamhankar@hotmail.com) -->
<!-- This script has been modified slightly for use here    -->
<!-- Designer: Robert A. Metcalf (ovinuppi@ovinuppi.com)    -->
<!-- Get a clean copy at the above address                  -->
var emailkill = false;
function validate1() {
var GoodVal=1;
var TmpVal = document.getElementById('trialemail1').value;
if (TmpVal=='') {
  alert('Please enter an email address');
  return false;
} else {
  emailkill = false;
  emailCheck(TmpVal);
  if (emailkill == true) {
	return false;
  }
}
}

function validate2() {
var GoodVal=1;
var TmpVal = document.getElementById('trialemail2').value;
if (TmpVal=='') {
  alert('Please enter an email address');
  return false;
} else {
  emailkill = false;
  emailCheck(TmpVal);
  if (emailkill == true) {
	return false;
  }
}
}

function validate3() {
var GoodVal=1;
var TmpVal = document.getElementById('trialemail3').value;
if (TmpVal=='') {
  alert('Please enter an email address');
  return false;
} else {
  emailkill = false;
  emailCheck(TmpVal);
  if (emailkill == true) {
	return false;
  }
}
}

function emailCheck (emailStr) {
var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
var matchArray=emailStr.match(emailPat);
if (matchArray==null) {
  alert("Email address seems incorrect (check @ and .'s)");
  emailkill = true;
  return false;
}
var user=matchArray[1];
var domain=matchArray[2];
for (i=0; i<user.length; i++) {
  if (user.charCodeAt(i)>127) {
    alert("Ths username contains invalid characters.");
    emailkill = true;
    return false;
  }
}
for (i=0; i<domain.length; i++) {
  if (domain.charCodeAt(i)>127) {
    alert("Ths domain name contains invalid characters.");
    emailkill = true;
    return false;
  }
}
if (user.match(userPat)==null) {
  alert("The username doesn't seem to be valid.");
  emailkill = true;
  return false;
}
var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {
  for (var i=1;i<=4;i++) {
    if (IPArray[i]>255) {
      alert("Destination IP address is invalid!");
      emailkill = true;
      return false;
    }
  }
  event.returnValue=true;
}
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
  if (domArr[i].search(atomPat)==-1) {
    alert("The domain name does not seem to be valid.");
    emailkill = true;
    return false;
  }
}
if (checkTLD && domArr[domArr.length-1].length!=2 && 
  domArr[domArr.length-1].search(knownDomsPat)==-1) {
  alert("The address must end in a well-known domain or two letter " + "country.");
  emailkill = true;
  return false;
}
if (len<2) {
  alert("This address is missing a hostname!");
  emailkill = true;
  return false;
}
// If we've gotten this far, everything's valid!
}