// Copyright   2001 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.
// email
/**
 * DHTML email validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

function checkEmail (strng,id) {
  var at="@";
  var dot=".";
  var lat=strng.indexOf(at);
  var lstr=strng.length;
  var ldot=strng.indexOf(dot);
  var error="";
  
  if (strng == "") {
    error = "You didn't enter an email address.\n";
  }
  var emailFilter=/^.+@.+\..{2,4}$/;
  if (!(emailFilter.test(strng))) { 
    error = "Please enter a valid email address.\n";
  }
  else {
    //test email for illegal characters
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/;
    if (strng.match(illegalChars)) {
      error = "The email address contains illegal characters.\n";
    }
  }

  if (strng.indexOf(at)==-1){
    error="Invalid email address";
  }
  else if (strng.indexOf(at)==-1 || strng.indexOf(at)==0 || strng.indexOf(at)==lstr){
    error="Invalid email address";
  }
  else if (strng.indexOf(dot)==-1 || strng.indexOf(dot)==0 || strng.indexOf(dot)==lstr){
    error="Invalid email address";
  }
  else if (strng.indexOf(at,(lat+1))!=-1){
    error="Invalid email address";
  }
  else if (strng.substring(lat-1,lat)==dot || strng.substring(lat+1,lat+2)==dot){
    error="Invalid email address";
  }
  else if (strng.indexOf(dot,(lat+2))==-1){
    error="Invalid email address";
  }
  else if (strng.indexOf(" ")!=-1){
    error="Invalid email address";
  }
  if (error != "")
    {
      alert(error);
      document.getElementById(id).value="";
    }
  return error;    
}


function checkEmailNoClear (strng,id) {
  var at="@";
  var dot=".";
  var lat=strng.indexOf(at);
  var lstr=strng.length;
  var ldot=strng.indexOf(dot);
  var error="";
  
  if (strng == "") {
    error = "You didn't enter an email address.\n";
  }
  var emailFilter=/^.+@.+\..{2,3}$/;
  if (!(emailFilter.test(strng))) { 
    error = "Please enter a valid email address.\n";
  }
  else {
    //test email for illegal characters
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/;
    if (strng.match(illegalChars)) {
      error = "The email address contains illegal characters.\n";
    }
  }

  if (strng.indexOf(at)==-1){
    error="Invalid email address";
  }
  else if (strng.indexOf(at)==-1 || strng.indexOf(at)==0 || strng.indexOf(at)==lstr){
    error="Invalid email address";
  }
  else if (strng.indexOf(dot)==-1 || strng.indexOf(dot)==0 || strng.indexOf(dot)==lstr){
    error="Invalid email address";
  }
  else if (strng.indexOf(at,(lat+1))!=-1){
    error="Invalid email address";
  }
  else if (strng.substring(lat-1,lat)==dot || strng.substring(lat+1,lat+2)==dot){
    error="Invalid email address";
  }
  else if (strng.indexOf(dot,(lat+2))==-1){
    error="Invalid email address";
  }
  else if (strng.indexOf(" ")!=-1){
    error="Invalid email address";
  }
  if (error != "")
    {
      alert(error);
    }
  return error;    
}


function checkEmailNoClearNoAlert (strng,id) {
  var at="@";
  var dot=".";
  var lat=strng.indexOf(at);
  var lstr=strng.length;
  var ldot=strng.indexOf(dot);
  var error="";
  
  if (strng == "") {
    error = "You didn't enter an email address.\n";
  }
  var emailFilter=/^.+@.+\..{2,3}$/;
  if (!(emailFilter.test(strng))) { 
    error = "Please enter a valid email address.\n";
  }
  else {
    //test email for illegal characters
    var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/;
    if (strng.match(illegalChars)) {
      error = "The email address contains illegal characters.\n";
    }
  }

  if (strng.indexOf(at)==-1){
    error="Invalid email address\n";
  }
  else if (strng.indexOf(at)==-1 || strng.indexOf(at)==0 || strng.indexOf(at)==lstr){
    error="Invalid email address\n";
  }
  else if (strng.indexOf(dot)==-1 || strng.indexOf(dot)==0 || strng.indexOf(dot)==lstr){
    error="Invalid email address\n";
  }
  else if (strng.indexOf(at,(lat+1))!=-1){
    error="Invalid email address\n";
  }
  else if (strng.substring(lat-1,lat)==dot || strng.substring(lat+1,lat+2)==dot){
    error="Invalid email address\n";
  }
  else if (strng.indexOf(dot,(lat+2))==-1){
    error="Invalid email address\n";
  }
  else if (strng.indexOf(" ")!=-1){
    error="Invalid email address\n";
  }
  return error;    
}


function echeck(str) {
  
  return true;
}

function checkPhone (section,elem,strng) {
	var error = "";
	if (strng == "") {
		error = "You didn't enter a phone number.\n";
	}

	var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters
	if (isNaN(parseInt(stripped))) {
		error += "The phone number contains illegal characters.\n";
	}
	var len=3;
	if (section == 3) len=4;
	if (!(stripped.length == len)) {
		error += "The phone number is the wrong length: please enter "+len+" digits.\n";
	} 
	if (error != "")
	{
		error+="\n\nThe entry has not been saved.";
		//alert(error);
		elem.value="";
	}
	return error;
}
// phone number - strip out delimiters and check for 10 digits
function checkPhone_orig (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a phone number.\n";
}
var stripped = strng.replace(/[\(\)\.\-\ ]/g, ''); //strip out acceptable non-numeric characters
//alert(parseInt(stripped));
//    if (isNaN(parseInt(stripped))) {
    if (isNaN(stripped)) {
       error = "The phone number contains illegal characters.";
  
    }
    if (!(stripped.length == 10)) {
	error = "The phone number is the wrong length. Make sure you included an area code.\n";
    } 
    alert(error);
return error;
}
// 5-digit ZIP code - no delimiters and check for 5 digits
function checkZipx (strng) {
	var error = "";
	if (strng == "") {
	   error = "You didn't enter a ZIP code.\n";
	}
    if (isNaN(strng)) {
       error = "The ZIP code contains illegal characters.";
    }
    if (!(stripped.length == 5)) {
		error = "The ZIP code is the wrong length. If must be 5 digits.\n";
    } 
	return error;
}
// password - between 6-8 chars, uppercase, lowercase, and numeral
function checkPassword (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a password.\n";
}
    var illegalChars = /[\W_]/; // allow only letters and numbers
    
    if ((strng.length < 6) || (strng.length > 8)) {
       error = "The password is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
      error = "The password contains illegal characters.\n";
    } 
    else if (!((strng.search(/(a-z)+/)) && (strng.search(/(A-Z)+/)) && (strng.search(/(0-9)+/)))) {
       error = "The password must contain at least one uppercase letter, one lowercase letter, and one numeral.\n";
    }  
return error;    
}    
// username - 4-10 chars, uc, lc, and underscore only.
function checkUsername (strng) {
var error = "";
if (strng == "") {
   error = "You didn't enter a username.\n";
}
    var illegalChars = /\W/; // allow letters, numbers, and underscores
    if ((strng.length < 4) || (strng.length > 10)) {
       error = "The username is the wrong length.\n";
    }
    else if (illegalChars.test(strng)) {
    error = "The username contains illegal characters.\n";
    } 
return error;
}       
// non-empty textbox
function isEmpty(strng) {
var error = "";
  if (strng.length == 0) {
     error = "The mandatory text area has not been filled in.\n"
  }
return error;	  
}
// was textbox altered
function isDifferent(strng) {
var error = ""; 
  if (strng != "Can\'t touch this!") {
     error = "You altered the inviolate text area.\n";
  }
return error;
}
// exactly one radio button is chosen
function checkRadio(checkvalue) {
var error = "";
   if (!(checkvalue)) {
       error = "Please check a radio button.\n";
    }
return error;
}
// valid selector from dropdown list
function checkDropdown(choice) {
var error = "";
    if (choice == 0) {
    error = "You didn't choose an option from the drop-down list.\n";
    }    
return error;
}