ckeditor osticket

Is it possable to install ckeditor to osticket 1.6.0 if it is how do I do it

here's the code I got so far it's not working

<?php
define('WYSIWYG',1);
if(!defined('OSTSCPINC') or !$thisuser->canManageKb()) die('Access Denied');
$info=($errors && $_POST)?Format::input($_POST):Format::htmlchars($answer);
if($answer && $_REQUEST['a']!='add'){
$title='Edit Premade Reply';
$action='update';
}else {
$title='Add New Premade Reply';
$action='add';
$info['isenabled']=1;
}
?>
<div>

<?if($errors['err']) {?>
<p align="center" id="errormessage"><?=$errors['err']?></p>
<?}elseif($msg) {?>
<p align="center" id="infomessage"><?=$msg?></p>
<?}elseif($warn) {?>
<p id="warnmessage"><?=$warn?></p>
<?}?>
</div>
<div class="msg"><?=$title?></div>
<table width="100%" border="0" cellspacing=1 cellpadding=2>
<form action="kb.php" method="POST" name="group">
<input type="hidden" name="a" value="<?=$action?>">
<input type="hidden" name="id" value="<?=$info['premade_id']?>">
<tr><td width=80px>Title:</td>
<td><input type="text" size=45 name="title" value="<?=$info['title']?>">
&nbsp;<font class="error">*&nbsp;<?=$errors['title']?></font>
</td>
</tr>
<tr>
<td>Status:</td>
<td>
<input type="radio" name="isenabled" value="1" <?=$info['isenabled']?'checked':''?> /> Active
<input type="radio" name="isenabled" value="0" <?=!$info['isenabled']?'checked':''?> />Offline
&nbsp;<font class="error">&nbsp;<?=$errors['isenabled']?></font>
</td>
</tr>
<tr><td valign="top">Category:</td>
<td>Department under which the 'answer' will be made available.&nbsp;<font class="error">&nbsp;<?=$errors['depts']?></font><br/>
<select name=dept_id>
<option value=0 selected>All Departments</option>
<?
$depts= db_query('SELECT dept_id,dept_name FROM '.DEPT_TABLE.' ORDER BY dept_name');
while (list($id,$name) = db_fetch_row($depts)){
$ck=($info['dept_id']==$id)?'selected':''; ?>
<option value="<?=$id?>" <?=$ck?>><?=$name?></option>
<?
}?>
</select>
</td>
</tr>
<tr><td valign="top">Answer:</td>
<td>Premade Reply - Ticket's base variables are supported.&nbsp;<font class="error">*&nbsp;<?=$errors['answer']?></font><br/>

<?
}
/* If page requires WYSIWYG editor include ckeditor Javascript */
if (defined('WYSIWYG');

?>
<script type="text/javascript" src="include/staff/ckeditor/ckeditor.js"></script>
<?}?>
</td>
</tr>
<tr>
<td nowrap>&nbsp;</td>
<td><br>
<input class="button" type="submit" name="submit" value="Submit">
<input class="button" type="reset" name="reset" value="Reset">
<input class="button" type="button" name="cancel" value="Cancel" onClick='window.location.href="kb.php"'>
</td>
</tr>
</form>
</table>