addLoadListener(init);

function init()
{
  document.forms[0].onsubmit = validateFields;

  return true;
}

function validateFields()
{
  var firstName = document.forms[0].elements["C01"];
  var lastName = document.forms[0].elements["C02"];
  var contactPhone = document.forms[0].elements["C03"];
  var email = document.forms[0].elements["C04"];
  var general = document.forms[0].elements["C05"][0];
  var sales = document.forms[0].elements["C05"][1];
  var buildWhen = document.forms[0].elements["C06"];
  
  if ((firstName.value != "") && (lastName.value != "") && (contactPhone.value != "") && (email.value != ""))
  {
	  if (sales.checked == true)
	  {
		  var hasLand = document.forms[0].elements["C07"][0];
		  var noLand = document.forms[0].elements["C07"][1];
		  
		  if ((buildWhen.value == "") || ((hasLand.checked == false) && (noLand.checked == false)))
		  {
			alert("Please fill out all required fields (marked with an *).");
			 /*Abort submission */
			return false;
		  }
		
	  }
	  
	  if (!/^[\w\.\-]+@([\w\-]+\.)+[a-zA-Z]+$/.test(email.value))
	  {
		alert("That is not a valid e-mail address, please amend.");
		return false;
	  }
		 /* Continue with submission */
		return true;
  }
  else
  {
    alert("Please fill out all required fields (marked with an *).");

    /* Abort submission */
    return false;
  }
}

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();
      };
    }
  }
};