How to make WordPress Twitter Tools Plugin XHTML Valid

A common error occurs when including a URL which contains an ampersand (“&”). WordPress Twitter Tools Plugin by Alex King do this, I mean put & in the url. So we have to replace & with it’s equivalent &

Follow the procedure :

1. Always Backup the original File
2. Find the twitter-tools.php file in Twitter Tools Plugin folder
3. Find the following piece of code in the file

<link rel="stylesheet" type="text/css" href="'.site_url('/index.php?ak_action=aktt_css&v='.AKTT_VERSION).'" />
<script type="text/javascript" src="'.site_url('/index.php?ak_action=aktt_js&v='.AKTT_VERSION).'"></script>
Replace the Code with this
<link rel="stylesheet" type="text/css" href="'.site_url('/index.php?ak_action=aktt_css&amp;v='.AKTT_VERSION).'" />
<script type="text/javascript" src="'.site_url('/index.php?ak_action=aktt_js&amp;v='.AKTT_VERSION).'"></script>

Go to XHTML Validation Service and re-validate.