On my product pages I have a hidden text field attribute and use JavaScript to change it's value.

This value is a URL (pointing to a file on my server) like the code below.

Code:
<a href="http://www.example.com/example.zip">Example</a>
I've noticed that when using the above code on the checkout and orders page (via admin) the hyperlink is not displayed. Instead, the full text is outputted.

Is there a work-around for this?