/*******************************************************************************************************************************
	validateContactUs()
	
	Description:
	Test the given input to determine if all required fields have been entered correctly.
*******************************************************************************************************************************/
function validateContactUs(obj)
{
var error = "";

// PERSONAL INFORMATION --------------------------------------------------------------------------

if (obj.name.value == "")
    {
      error += "Please fill in your first name." + "\n";
    }
if (!emailCheck(obj.email.value))
  {
    error += "Please verify that your email address is correct." + "\n";
  }
if (obj.questions.value == "")
    {
      error += "Please fill in your questions/comments." + "\n";
    }
// ERROR -------------------------------
if (error != "")
  { 
    alert(error);
    return (false);
  } else {
    return (true);
  }

}

/*******************************************************************************************************************************
	emailCheck()
	
	Description:
	Test the given input value to determine if it is a valid e-mail address. Return 'true' if yes, 'false' if no.
*******************************************************************************************************************************/
function emailCheck (emailStr) {
	var checkTLD = 1;
	var knownDomsPat = /^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat = /^(.+)@(.+)$/;
	var specialChars = "\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars = "\[^\\s" + specialChars + "\]";
	var quotedUser = "(\"[^\"]*\")";
	var ipDomainPat = /^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom = validChars + '+';
	var word = "(" + atom + "|" + quotedUser + ")";
	var userPat = new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat = new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray = emailStr.match(emailPat);
	
	if (matchArray == null) { return false; }
	
	var user=matchArray[1];
	var domain=matchArray[2];
	
	for (i = 0; i < user.length; i++) { if (user.charCodeAt(i)>127) { return false; } }
	for (i = 0; i < domain.length; i++) { if (domain.charCodeAt(i) > 127) { return false; } }
	if (user.match(userPat) == null) { return false; }
	
	var IPArray=domain.match(ipDomainPat);
	
	if (IPArray != null) {
		for (var i = 1; i <= 4; i++) { if (IPArray[i] > 255) { return false; } }
		return true;
	}
	
	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;
	
	for (i = 0; i < len; i++) {if (domArr[i].search(atomPat)==-1) { return false; } }
	if (checkTLD && domArr[domArr.length - 1].length != 2 && domArr[domArr.length - 1].search(knownDomsPat) == -1) { return false; }
	if (len < 2) { return false; }
	
	return true;
}