Clarify where you are using the WordPress Codex.
Is this something you want to use on other "external" pages outside of WordPress,
or is this something you are doing within the theme files?
And one other question....
Why would you be asking a question like this when you have web development links in your sig?
Why don't you ask the person who owns the site? You're advertising their site in your signature!
They seem to be web developers with WordPress solutions ? Very strange indeed.