function getCookie(frm) {
  var flds = new Array();
  flds[flds.length] = [frm.FullName, "Name"];
  flds[flds.length] = [frm.MailAddress, "MailAddress"];
  for (var i = 0; i < flds.length; i ++){
   if(document.cookie) {
    var index = document.cookie.indexOf(flds[i][1]);
    if (index != -1) {
      var countbegin = (document.cookie.indexOf("=", index) + 1);
      var countend = document.cookie.indexOf(";", index);
      if (countend == -1) {
        countend = document.cookie.length;
      }
      flds[i][0].value = document.cookie.substring(countbegin, countend);
    }
   }
  }
  return;
}
function setCookie(frm) {
  var flds = new Array();
  flds[flds.length] = [frm.FullName.value, "Name"];
  flds[flds.length] = [frm.MailAddress.value, "MailAddress"];
  for (var i = 0; i < flds.length; i ++){
   document.cookie = flds[i][1] + "=" + flds[i][0] + "; expires=Friday, 31-Dec-2010 12:00:00 GMT"; 
  }
}
function open_window(w_file,breit,hoch) {
 var info_win = window.open(w_file,"neu","width=" + breit + ",height=" + hoch + ",toolbar=no,directories=no,menubar=no,scrollbars=yes,status=no,resizable=yes");
}
function doSearch(frm, btn){
 if (frm.Query1.value == '') {
  alert( "Bitte gib einen Suchbegriff ein." );
  frm.Query1.focus();
  } else {
  btn.disabled=true;
  btn.value='Warten ';
  window.location.href="entries.html?SearchView&SearchFuzzy=true&Query=" + escape(frm.Query1.value);
  }
}
function validateFieldArray( flds ){
 for (var i = 0; i < flds.length; i ++){
  if ( flds[i][0].value == "" ){
   alert( "Bitte gib " + flds[i][1] + " ein.");
   flds[i][0].focus();
   return false;
  }
 }
 return true;
}

function validate(){
 var frm = document._DominoForm;
 var flds = new Array();

 with ( frm ){
  <!-- PERSÖNLICHE ANGABEN -->
  flds[flds.length] = [FullName, "Deinen Namen"];
  flds[flds.length] = [Body, "einen Text"];
  if ( !validateFieldArray( flds ) ) return false;

  <!-- EMAIL ADRESSE -->
  if ( !(MailAddress.value == "") ){
   if ( !ValidateEmail( MailAddress.value ) ){
    MailAddress.focus();
    return false;
   }
  }
 }
}
 <!-- S E N D E N -->
 function doSubmit(frm, btn){
  if ( validate() == false ){
  }else{
   btn.disabled = true;
   btn.value = 'Bitte warten...';
   frm.button2.value = 'Abbrechen';
   /* window.open('./$$Return', 'Danke', 'WIDTH=250,HEIGHT=200'); */
   if (frm.allowCookie.value == '1') {
    setCookie(frm);
   }
   frm.submit();
  }
 }
 function doReset(frm, btn){
  if ( btn.value == 'Abbrechen' ){
   frm.reset();
   frm.FullName.focus();
  }else{
   frm.button1.disabled = false;
   frm.button1.value = 'Speichern';
   btn.value = 'Abbrechen';
  }
 }
<!-- VALIDATE MAILADDRESS -->
function ValidateEmail (emailStr) {
/* Pattern to check if the entered e-mail address fits the user@domain format. */
var emailPat=/^(.+)@(.+)$/

/* Pattern to check for special characters we don't want, including ( ) < > @ , ; : \ " . [ ] */
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]"

/* The following string represents the range of characters allowed in a username or domainname */
var validChars="\[^\\s" + specialChars + "\]"

/* The following pattern applies if the "user" is a quoted string, E.g. "jiminy cricket"@disney.com */
var quotedUser="(\"[^\"]*\")"

/* Pattern 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@themorgue.hell, john and doe are words */
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=emailStr.match(emailPat)
if (matchArray==null) {
/* Too many/few @'s or something; basically, this address doesn't even fit the general mould of a valid e-mail address. */
alert("Die eingegebene eMail-Adresse scheint nicht gültig zu sein, überprüfen Sie bitte '@' und '.'")
return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
// user is not valid
alert("Der eingegebene Benutzer der eMail-Adresse scheint nicht gültig zu sein.")
return false
}

/* if the e-mail address is at an IP address 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) {
alert("Die eingegebene Bestimmungs-IP der eMail-Adresse ist nicht gültig.")
return false
}
}
return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
alert("Die eingegebene Domäne der eMail-Adresse scheint nicht gültig zu sein.")
return false
}

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

/* Now we need to break up the domain to get a count of how many atoms it consists of. */
var atomPat=new RegExp(atom,"g")
var domArr=domain.match(atomPat)
var len=domArr.length
if (domArr[domArr.length-1].length<2 || domArr[domArr.length-1].length>4) {
// the address must end in a two letter or three letter word.
alert("Die eingegebene eMail-Adresse muß in einer dreistelligen Domäne oder einem zweistelligen Ländercode enden.")
return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
var errStr="Die eingegebene eMail-Adresse hat keinen Hostnamen."
alert(errStr)
return false
}

// If we've gotten this far, everything's valid!
// alert('Die eingegebene eMail-Adresse ' + emailStr + ' scheint gültig zu sein.');
return true;
}