confirm email field?

<form name = "myform">
<p> Enter E-Mail Address: - <input type = "text" name = "emailadd" id = "emailadd" size = "42" onblur = "checkValidEmail()"> </p>
<p> Confirm Email Address: - <input type = "text" name = "conemail" id = "conemail" size = "42" onblur = "checkConfirmEmail()"> </p>
</form>

<script type = "text/javascript">

function checkValidEmail() {
email1= document.myform.emailadd.value;
if (/^([a-z0-9])([\w\.\-\+])+([a-z0-9])\@(([\w\-]?)+\.)+([a-z]{2,4})$/i.test(email1)) {
alert ("Valid Address"); // simply comment out this line if not required
}
else {
alert ("Invalid Email Address - Please Re-Enter");
document.myform.emailadd.value = "";
document.myform.emailadd.focus();
}
}

function checkConfirmEmail() {
email2 = document.myform.conemail.value;
if (email2 != email1) {
alert ("Email addresses do not match - please re-enter!");
document.myform.emailadd.value = "";
document.myform.conemail.value = "";
document.myform.emailadd.focus();
}
else { // delete these lines if alert not required.
alert ("Passwords match!");
}
}

</script>

//<?php
function onValidateFunction(&$fields, &$vMsg, &$rMsg, &$rClass){
   
   if($fields['emailadd'] != $fields['emailcon']){
      //we have an error
      $vMsg['emailadd'] = "The two email addresses do not match!";
      $rClass['emailadd'] = $rClass['emailcon'] = 'invalid';
   }
   return true; //important
}

function confirmeamils(&$fields, &$vMsg, &$rMsg, &$rClass){
   
   if($fields['email'] != $fields['email2']){
      //we have an error
      $vMsg['email'] = "The two email addresses do not match!";
      $rClass['email'] = $rClass['email2'] = 'invalid';
   }
   return true; //important
}