Blurr email list

Joomla 1.5 CMS On our new website, the customer will be able to view a list of our email address on file. However this email list is confidential and we do not allow them to copy this. This listing is shown to the user only as proof of the list existence. I am looking for a way to still show the list but to make part of the name "blurry". They can see part of the name and all after the @ sign. Example: blee...@[login to view URL] 123tr...@[login to view URL] stringtop...@[login to view URL] The ... (dots) are actually the font/alpha that will be blurry