Help please (js is conflicting with contact form which is php & js )

Hello all,

Excuse me if I posted this in the wrong forum but my issue has to due with both JS and php, the nature of the problem is when submitting the form the page supposed to stay open well the accordion should stay open to see the thank you message and then redirect to another page. I hope someone understands what I'm trying to say here. any ways the code is below.

<?php
// Set email variables$email_to = 'o.a.alvarado01@gmail.com';$email_subject = 'Form submission';
// Set required fields$required_fields = array('fullname','email','comment');
// set error messages$error_messages = array(	'fullname' => 'Please enter a Name to proceed.',	'email' => 'Please enter a valid Email Address to continue.',	'comment' => 'Please enter your Message to continue.');
// Set form status$form_complete = FALSE;
// configure validation array$validation = array();
// check form submittalif(!empty($_POST)) {	// Sanitise POST array	foreach($_POST as $key => $value) $_POST[$key] = remove_email_injection(trim($value));		// Loop into required fields and make sure they match our needs	foreach($required_fields as $field) {				// the field has been submitted?		if(!array_key_exists($field, $_POST)) array_push($validation, $field);				// check there is information in the field?		if($_POST[$field] == '') array_push($validation, $field);				// validate the email address supplied		if($field == 'email') if(!validate_email_address($_POST[$field])) array_push($validation, $field);	}		// basic validation result	if(count($validation) == 0) {		// Prepare our content string		$email_content = 'New Website Comment: ' . "\n\n";				// simple email content		foreach($_POST as $key => $value) {			if($key != 'submit') $email_content .= $key . ': ' . $value . "\n";		}				// if validation passed ok then send the email		mail($email_to, $email_subject, $email_content);				// Update form switch		$form_complete = TRUE;	}}
function validate_email_address($email = FALSE) {	return (preg_match('/^[^@\s]+@([-a-z0-9]+\.)+[a-z]{2,}$/i', $email))? TRUE : FALSE;}
function remove_email_injection($field = FALSE) {   return (str_ireplace(array("\r", "\n", "%0a", "%0d", "Content-Type:", "bcc:","to:","cc:"), '', $field));}
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"><head>
<!-- Contact Form Designed by James Brand @ dreamweavertutorial.co.uk --><!-- Covered under creative commons license - http://dreamweavertu...permissions.htm -->
	<title>Contact Form</title>	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><link href="contact/css/contactform.css" rel="stylesheet" type="text/css" />	<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/mootools/1.3.0/mootools-yui-compressed.js"></script>    <script type="text/jscript" src="contact/validation/validation.js"></script>     	<script type="text/javascript">var nameError = '<?php echo $error_messages['fullname']; ?>';		var emailError = '<?php echo $error_messages['email']; ?>';		var commentError = '<?php echo $error_messages['comment']; ?>';function MM_preloadImages() { //v3.0  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}}    </script>
</head>
<body onload="MM_preloadImages('contact/images/x.png')">
<div id="formcontent">
<div id="form"><?php if($form_complete === FALSE): ?><form action="contactform.php" method="post" id="comments_form">	<div class="row">     <div class="label">Your Name</div><!-- end .label -->    <div class="input">    <input type="text" id="fullname" class="detail" name="fullname" value="<?php echo isset($_POST['fullname'])? $_POST['fullname'] : ''; ?>"/><?php if(in_array('fullname', $validation)): ?><span class="error"><?php echo $error_messages['fullname']; ?></span><?php endif; ?>    <div class="context">e.g. John Smith or Jane Doe</div><!-- end .context -->    </div><!-- end .input -->    </div><!-- end .row -->
	<div class="row">     <div class="label">Your Email Address</div>    <p><!-- end .label -->    </p>    <div class="input">      <input type="text" id="email" class="detail" name="email" value="<?php echo isset($_POST['email'])? $_POST['email'] : ''; ?>"/><?php if(in_array('email', $validation)): ?><span class="error"><?php echo $error_messages['email']; ?></span><?php endif; ?>    <div class="context">We will not share your email with anyone or spam you with messages either.</div><!-- end .context -->  </div><!-- end .input -->    </div><!-- end .row -->    	<div class="row">     <div class="label">Your Message</div><!-- end .label -->    <div class="input2">    <textarea id="comment" name="comment" class="mess"><?php echo isset($_POST['comment'])? $_POST['comment'] : ''; ?></textarea><?php if(in_array('comment', $validation)): ?><span class="error"><?php echo $error_messages['comment']; ?></span><?php endif; ?>    </div><!-- end .input -->    </div><!-- end .row -->        <div class="submit">    <input type="submit" id="submit" name="submit" value="Send Message"/>    </div><!-- end .submit -->    </form>	<?php else: ?><p>Thank you for your Message!</p><script type="text/javascript">setTimeout('ourRedirect()', 6000)function ourRedirect() {	location.href='html/contact.php'}</script><?php endif; ?>
</div><!-- end form --> </div><!-- end formcontent -->

</body></html>

The form does validate and sends the e-mail.

Also the page is located here so you can see what it actually does:www.alvaradowebdesign.com/GMG/contact.php

By the way thanks in advance;

Omar