Restrict users from cutting and pasting content(form data) in form fields

Hi,

I have a requirement where there are two fields: "Enter Email Address" and "Re-enter Email Address". The form should not allow the user to cut-and-paste the Email Address into the Re-enter field. It must be manually entered. Can this be done through javascript? Or by setting form properties with LiveCycle Designer? I'm using Es4 version. I am aware that i can restirct user from copying content within form. Solution to retrict pasting will be highly appreciated.

Thanks in advance,

Radhika