Syntax Highlighting Problem

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

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

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

    text = text.replace(/&/g, '&');
    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;
}