function validateLogin(formObj) {
	if (emptyField(formObj.email_txt) || !validateEmail(formObj.email_txt, formObj.email_txt)) {
		alert("Username not verified - please try again.\nRemember: it's your email address.");
	}
	else if (emptyField(formObj.password_txt)) {
		alert("Please enter your password.");
	}
  else {
		return true;
	}
	return false;
}

function validateRegistration(formObj) {
	if (emptyField(formObj.firstName_txt)) {
		alert("Please enter your first name.");
	}
	else if (emptyField(formObj.lastName_txt)) {
		alert("Please enter your last name.");
	}
	else if (emptyField(formObj.email_txt) || emptyField(formObj.confirmEmail_txt) || !validateEmail(formObj.email_txt, formObj.confirmEmail_txt)) {
		alert("Email address not verified - please try again.\nExample: info@westernstandard.ca");
	}
	else if (emptyField(formObj.password_txt) || emptyField(formObj.confirmPassword_txt) || !isSame(formObj.password_txt, formObj.confirmPassword_txt)) {
		alert("Password not verified - please try again.");
	}
  else {
		return true;
	}
	return false;
}

function validateGetPassword(formObj) {
	if (emptyField(formObj.email_txt) || !validateEmail(formObj.email_txt, formObj.email_txt)) {
		alert("Username not verified - please try again.\nRemember: it's your email address.");
	}
  else {
		return true;
	}
	return false;
}

/* * * * * * * */

function emptyField(textObj)
{
     if (textObj.value.length == 0) {
		 return true;
	 }
     for (var i=0; i<textObj.value.length; ++i) 
     {
          var ch = textObj.value.charAt(i);
          if (ch != ' ' && ch != '\t') {
			  return false;
		  }
     }
     return true;
}

function isSame(str1, str2) {
	var str1 = str1.value;
	var str2 = str2.value;
	if (str1 != str2) {
		return false;
	} else {
		return true;
	}
}

function validateEmail (strEmail, strEmail2) {
	
	var emailStr = strEmail.value;
	var emailStr2 = strEmail2.value;
	
	if (emailStr != emailStr2) {
		return false;
	}
	
	var checkTLD=0;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum|ca)$/;
	
	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) {
	
	alert("Email address seems incorrect (check @ and .'s)");
	return false;
	}
	var user=matchArray[1];
	var domain=matchArray[2];
	
	for (i=0; i<user.length; i++) {
	if (user.charCodeAt(i)>127) {
	alert("Ths username contains invalid characters.");
	return false;
	   }
	}
	for (i=0; i<domain.length; i++) {
	if (domain.charCodeAt(i)>127) {
	alert("Ths domain name contains invalid characters.");
	return false;
	   }
	}
	
	if (user.match(userPat)==null) {
	
	alert("The username doesn't seem to be valid.");
	return false;
	}
	
	var IPArray=domain.match(ipDomainPat);
	if (IPArray!=null) {
	
	for (var i=1;i<=4;i++) {
	if (IPArray[i]>255) {
	alert("Destination IP address is invalid!");
	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) {
	alert("The domain name does not seem to be valid.");
	return false;
	   }
	}
	
	if (checkTLD && domArr[domArr.length-1].length!=2 && 
	domArr[domArr.length-1].search(knownDomsPat)==-1) {
	alert("The address must end in a well-known domain or two letter " + "country.");
	return false;
	}
	
	if (len<2) {
	alert("This address is missing a hostname!");
	return false;
	}

	return true;
}