// 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

function checkEmail (strng) 
{

   var error="";
   if (strng == "") 
   {

	  error = "You didn't enter an email address.\n";
   }

   var emailFilter=/^([\w]+)(.[\w]+)*@([\w-]+\.){1,5}([A-Za-z]){2,6}$/;
   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";
		 }
   }
   return error;    
}


// phone number - strip out delimiters and check for 10 digits

function checkPhone (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.";

   }
   if (!(stripped.length == 10)) 
   {

	  error = "The phone number is the wrong length. Make sure you included an area code.\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;
}    

function submitForm(e, form)
{
   var theForm = $(form);
   var container = $(e);

   var why = "";
   why += isEmpty(theForm.first_name.value);
   why += isEmpty(theForm.last_name.value);
   why += checkEmail(theForm.email2.value);
   why += checkPhone(theForm.phone_work.value);
   why += checkDropdown(theForm.interest_c.selectedIndex);

   if(why != "") {
	  $("errorMsgBox").innerHTML = why;
	  return false;
   }else{
	  $("errorMsgBox").innerHTML = 'Sending request.';
	  theForm.send({
		 update: $("errorMsgBox"),
		 onRequest: function() {
			container.addClass('ajax-loading');
		 },
		 onComplete: function() {
			container.removeClass('ajax-loading');
		 }
	  });
   }
}