addLoadListener(init1);
addLoadListener(init2);
addLoadListener(init3);


function init1() {

  document.forms[0].onsubmit = checkFields;


  return true;
 
}

function init2() {

document.getElementById(this.id).onblur = unblank;


  return true;
 
}

function init3() {

document.getElementById(this.id).onfocus = blank;


  return true;
 
}

function checkFields() {
   
  var elements = document.forms["subscribeMe"].elements;
  
  var emailPattern = /^[\w\.\-]+@([\w\-]+\.)+[a-zA-Z]+$/;

for (var i = 0; i < elements.length; i++) {

    if (/(^| )checkRequired( |$)/.test(elements[i].className) && (elements[i].value == "" || elements[i].value == elements[i].defaultValue)) {
     
      elements[i].focus();
      alert("Please fill out this field.");
      return false;
    }

    if (/(^| )checkEmail( |$)/.test(elements[i].className) && !emailPattern.test(elements[i].value)) {
      elements[i].focus();
      alert("Please enter a valid e-mail address.");
      return false;
    }
}

  return true;
}

function blank(field)
{
  if (field.value == field.defaultValue) {
    field.value = '';
  }
}


function unblank(field)
{
  if (field.value == '')
  {
    field.value = field.defaultValue;
  }
}

function addLoadListener(fn)
{
  if (typeof window.addEventListener != 'undefined')
  {
    window.addEventListener('load', fn, false);
  }
  else if (typeof document.addEventListener != 'undefined')
  {
    document.addEventListener('load', fn, false);
  }
  else if (typeof window.attachEvent != 'undefined')
  {
    window.attachEvent('onload', fn);
  }
  else
  {
    var oldfn = window.onload;
    if (typeof window.onload != 'function')
    {
      window.onload = fn;
    }
    else
    {
      window.onload = function()
      {
        oldfn();
        fn();
      };
    }
  }
}