Ok... back-story... I need to have dynamic modal dialog boxes. Click a word in a Wordpress post and up pops a modal dialog with more information about that word. There are several of these in a page.

My solution to this was to create a short code that references a post id to get the post content to put in the dialog when it pops up. I'm using the Foundation Theme from Zurb as a starter, and it includes modal dialog code.

My issue, I'm getting random paragraph tags around my shortcode content. Can anyone tell me what I'm doing wrong????

What I have in WordPress editor on that page:

In order to develop a [PopUp id="1"]corporate compensation philosophy[/PopUp], total compensation must be

What I have my functions.php file

//Custom PopUp Shortcode for Modal Dialog hottness
function PopUp($atts, $ShortcodeContent = null) {
extract(shortcode_atts(array("id" => '5'), $atts));
$content = parse_shortcode_content( $content );

global $post;
$post = get_post($id);
$postSlug = the_slug($id);
$myPostContent = $post->post_content;

return '
' . $ShortcodeContent . '

' . $ShortcodeContent . ''. $myPostContent . '
';
}
add_shortcode('PopUp', 'PopUp');

End result of the above:
http://www.ebs-consulting.com/Wordpress/consulting-services/human-resources/wage-and-salary-administration/