Syntax Highlighting Problem

I have integrated the fckeditor syntax highlighting plugin from http://psykoptic.com/blog/post/2008/12/ ... ditor.aspx for SyntaxHighlighter.

The issue is that FckEditor is stripping my code escapes when I save. So

$sql = 'SELECT user_id, username FROM '.$prefix.'_users WHERE user_id <= \'20\' AND user_id != \'1\'';

Becomes

$sql = 'SELECT user_id, username FROM '.$prefix.'_users WHERE user_id <= '20' AND user_id != '1'';

The plugin comes with some helper functions in it's .js file, but I can't figure out how to get it working properly.

// ----------------------
// Helper functions
// ----------------------
function HTMLEncode(text) {
    if (!text)
        return '';

    text = text.replace(/&/g, '&amp;');
    text = text.replace(/</g, '&lt;');
    text = text.replace(/>/g, '&gt;');

    return text;
}

function HTMLDecode(text) {
    if (!text)
        return '';

    text = text.replace(/&gt;/g, '>');
    text = text.replace(/&lt;/g, '<');
    text = text.replace(/&amp;/g, '&');
    text = text.replace(/<br>/g, '\n');
    text = text.replace(/&quot;/g, '"');

    return text;
}

I tested this without the plugin installed and it still does it. Anyone have any suggestions?