JavaScript - Ie8 Errors Ff Works!

here is the link where the problem persist
http://www.ornusweb.com/what_we_done.html

I have mixed 2 scripts the light box script(lightbox.js) and scroller script(scriptaculous.js)

the page only works with ie and in other browsers it opens as an image(light box wont work)

the errors say

1st error> uncaught script.aculo.us requires the prototype javaScript frame work >1.4.0
scriptaculous.load
(anonymous function)

2 error > uncaught typeErrorbject function object(){[native code]} has no method 'extends'
(anonymous function)

can some one help me solve these problem's

i get this error when ever i try to process the form:

There was a SyntaxError: Unexpected token < error due to an parsererror condition.


Javacsipt/jquery:

$(document).ready(function(){

$("#slide").click(function(){
$("#inner-wrapper").slideToggle();
});

$('form #response').hide();
$('#submit').click(function(e){

e.preventDefault();

var valid = '';
var required = ' is required';
var name = $('form #name').val();
var email = $('form #email').val();
var fname = $('form #fname').val();
var femail = $('form #femail').val();
var message = $('form #message').val();
var honeypot = $('form #honeypot').val();
var humancheck = $('form #humancheck').val();

//Error checking


if (name == '' || name.length <=2) {
valid = '<p>Your name' + required + '</p>';
}

if (!email.match(/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/)) {
valid += '<p>Your email' + required + '</p>';
}

if (fname == '' || fname.length <=2) {
valid += '<p>Your friend\'s name' + required + '</p>';
}

if (!femail.match(/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/)) {
valid += '<p>Your friend\'s email' + required + '</p>';
}


if (message == '' || message.length <=5) {
valid += '<p>A message' + required + '</p>';
}

if (honeypot != 'http://') {
valid += '<p><center>Spambots are not allowed.</center></p>';
}

if (humancheck != '') {
valid += '<p><center>A human user' + required + '</center></p>';
}

if (valid != '') {
$('form #response').removeClass().addClass('error')
.html('<strong>Please correct the errors below.</strong>' + valid).fadeIn('2000');
}else {
$('form #response').removeClass().addClass('processing').html('<center>Working...</center>').fadeIn('2000');

var formData = $('form').serialize();
submitForm(formData);

}

});

});

function submitForm(formData) {
$.ajax({
type: 'POST',
url: 'emailfriend.php',
data: formData,
dataType: 'json',
cache: false,
timeout: 7000,
success: function(data) {
$('form #response').removeClass().addClass((data.error === true) ? 'error' : 'success')
.html(data.msg).fadeIn('fast');

if ($('form #response').hasClass('success')) {
setTimeout("$('form #response').fadeOut('slow')", 5000);
}
},

error: function(XMLHttpRequest, textStatus, errorThrown) {
$('form #response').removeClass().addClass('error')
.html('<p>There was a <strong>' + errorThrown +
'</strong> error due to an <strong>' + textStatus +
'</strong> condition.</p>').fadeIn('fast');
},
complete: function(XMLHttpRequest, status) {
$('form')[0].reset();
}

});
};

php file

PHP Code:
<?php
  error_reporting(E_ALL ^ E_NOTICE);
  
  sleep(3);
  
  $name = stripslashes($_POST[name]);
  $email = stripslashes($_POST[email]);
  $fname = stripslashes($_POST[fname]);
  $femail = stripslashes($_POST[femail]);
  $message = stripslashes($_POST[message]);
  $honeypot = $_POST[honeypot];
  $humancheck = $_POST[humancheck];
  
  if ($honeypot == 'http://' && empty($humancheck)) {
  
      $error_msg = '';
      $reg_exp = "/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,3})$/";
      
      if (!preg_match($reg_exp, $email)) {
         $error_msg .= "<p>A valid email is required</p>"; 
      }
      
        if (!preg_match($reg_exp, $femail)) {
         $error_msg .= "<p>A valid email is required</p>"; 
      }
      
      if (empty($name)) {
         $error_msg .= "<p/>Please provide your name</p>";
      }
      
      if (empty($fname)) {
         $error_msg .= "<p/>Please provide your name</p>";
      }
      
      if (empty($message)) {
          $error_msg .= "<p>A message is required.</p>";
      }
      
      if (!empty($error_msg)) {
         $return['error'] = true;
         $return['msg'] = "<h3>Oops! Looks like you missed a few fields.</h3>".$error_msg;
         echo json_encode($return);
         exit();
         
      }else {
        $return['error'] = false;
      
        $ref=@$HTTP_REFERER; 
        /////Message at the top of the page showing the url////
        $header_message = "Hi $fname \n Your friend $name requested you to visit this page at \n $ref \n";
        /// Body message prepared with the message entered by the user ////
        $body_message =$header_message."\n".$message."\n";
        // IP address of visitor is added to message, you can remove it if not required.//
        $body_message .="\n Sent from http://www.separatethescams.com";
        //// Mail posting part starts here /////////

        $headers="";
        //$headers = "Content-Type: text/html; charset=iso-8859-1\n".$headers; 
         // Un comment the above line to send mail in html format
        $headers4=$email;         // Change this to change from address
        $headers.="Reply-to: $headers4\n";
        $headers .= "From: $headers4\n"; 
        $headers .= "Errors-to: $headers4\n"; 

        $subject="$name visit this site!";

        mail($femail,$subject,$body_message,$headers);
      
         $return['msg'] = " <b><p><center>Thanks for spreading the word! :) " . "<font color='red'>" .$name .  "</font>" . " </p>" . "</b>" . "</center>";
         echo json_encode($return);
      }
      
  }else {
      $return['error'] = true;
      $return['msg'] = "<h3><center>0ops there was a problem submitting the data. Please try again!</center></h3>";
      echo json_encode($return);
  }

?>


html file

<html>
<head>
<link rel="stylesheet" href="ajaxform/form.css" type="text/css" media="screen"/>
</head>
<body>

<div id="wrapper">
<h3 id="slide">Email This Page To a Friend</h3>
<hr></hr>
<div id="inner-wrapper">

<form id="my_form" action="ajaxform/emailfriend.php" method="post">

<div id="response"><!--This will hold error message and response from server. --></div>
<div class="inputs">
<p>
<label>Name&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp ;&nbsp;</label>
<input name="name" type="text" placeholder="Your Name" class="required" id="name" size="30" />
</p>
</div>

<div class="inputs">
<p>
<label>Email&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs p;&nbsp;&nbsp;</label>
<input name="email" type="text" placeholder="Your Email" class="required" id="email" size="30" />
</p>
</div>

<div class="inputs">
<p>
<label>Friend's Name&nbsp;&nbsp;</label>
<input name="fname" type="text" placeholder="Friend's Name" class="required" id="fname" size="30" />
</p>
</div>

<div class="inputs">
<p>
<label>Friend's Email&nbsp;&nbsp;</label>
<input name="femail" type="text" placeholder="Friend's Email" class="required" id="femail" size="30" />
</p>
</div>

<div class="inputs">
<p>
<label id="msg">Message&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</label>
<textarea name="message" cols="24" rows="5"type="text" placeholder="Message To Friend" class="required" id="message"></textarea>
</p>
</div>

<div class="button">
<input name="submit" type="submit" id="submit" value="EMAIL PAGE" />
</div>

<div class="inputs">
<input type="hidden" name="honeypot" id="honeypot" value="http://" />
<input type="hidden" name="humancheck" id="humancheck" class="clear" value="" />
</div>

</form>
</div> <!-- inner-wrapper end -->
</div>

<script type="text/javascript" src=" https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="ajaxform/ajax_submit.js"></script>
</body>
</html>

is there anyway to set my code in javascript to ignore errors
I have an error that comes up on ie but everything workes fine and i can't find the source of the error -- can i tell the browser to ignore it?

If you go to: http://www.five-nine.net/index2/index.html and click on "Go Ahead what ..... info@five-nine.net" And try to submit the form, it will work in every browser except IE6, IE7, & IE9, (I don't know why IE8 is so different than the rest but w/e)... However I don't see any errors on in the JavaScript.

Does anyone know why this would happen in just those three browsers?