function isEmail(str) {
  // are regular expressions supported?
  var supported = 0;
  if (window.RegExp) {
    var tempStr = "a";
    var tempReg = new RegExp(tempStr);
    if (tempReg.test(tempStr)) supported = 1;
  }
  
  if (!supported) 
    return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
  
  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
  
  if (!(!r1.test(str) && r2.test(str)))
    return false;
  else
    return true;
}

function ValidateCreateAcct(Form)
{     
  if (Form.FirstName.value == "")
  {
    alert("Skriv venligt dit fornavn");
    Form.FirstName.focus();
    return false;
  }
  if (Form.LastName.value == "")
  {
    alert("Skriv venligt dit efternavn");
    Form.LastName.focus();
    return false;
  }
  if (Form.Address.value == "")
  {
    alert("Skriv venligt din adresse");
    Form.Address.focus();
    return false;
  }
  if (Form.Zipcode.value == "")
  {
    alert("Skriv venligt dit post nr");
    Form.Zipcode.focus();
    return false;
  }
  if (Form.City.value == "")
  {
    alert("Skriv venligt hvilken by du bor i");
    Form.City.focus();
    return false;
  }
  if (Form.Email.value == "")
  {
    alert("Skriv venligt din email");
    Form.Email.focus();
    return false;
  }
  if (!isEmail(Form.Email.value))
  {
    alert("Skriv venligst en gyldig email adresse");
    Form.Email.focus();
    return false;  
  }
  if (AnonymousEmail(Form.Email.value))
  {
    alert("Du kan ikke tilmelde dig via en anonym email adresse");
    Form.Email.focus();
    return false;    
  }
  if (Form.Password.value == "" || Form.Password.value.length < 5)
  {
    alert("Skriv venligst en adgangskode, mindst 5 karakterer");  
    Form.Password.focus();
    return false;
  }
  if (Form.Password.value !=  Form.PasswordConfirm.value)
  {
    alert("Adgangskode og Bekræft adgangskode matcher ikke. Indtast dem venligst igen");
    Form.Password.value         = "";
    Form.PasswordConfirm.value  = "";
    Form.Password.focus();
    return false;
  }
  if (Form.Conditions)
  {
    if (!Form.Conditions.checked)
    {
      alert("Du SKAL acceptere de gældende betingelser og vilkår for at oprette et abonnement");
      Form.Conditions.focus();
      return false;  
    }
  }
 
  return true;
  
  function AnonymousEmail(Email)
  {
    DomainList = new Array();
/*("gmail.com", "hotmail.com", "yahoo.com", "heidimail.com", "aol.com", "msn.com", "webmail.us", "netzero.net", "lycos.com");*/
    
    
    Domain = Email.substring(Email.indexOf("@") + 1);
    
    for (var i in DomainList)
    {
      if  (Domain.toLowerCase() == DomainList[i].toLowerCase())  
        return true;
      
    }
    
    return false;
  }
}