Automated script to scan web site for email addresses

We need a script in PHP or ASP which scans through a website and sub-pages for email addresses. These addresses, along with contact information, will be stored in a MySQL database. E-mail address are displayed on the website but is hidden in the source code using javascript. Excerpt from the page's source code that encrypts email addresses: "var a=function(c,e){var d="";for(var b=0;b