Complete encapsulated Javascript MD5 library.
None.
Include the script in the footer of the body HTML.
<script src="/js/libs/md5/md5.js"></script>
Call the MD5 function and assign the result to a variable for later use.
var myMd5HashedString = MD5("my super secret password");
Always salt the MD5 function if possible.
var salt = "some-random-text";
var myMd5HashedString = MD5(salt + "my super secret password");