Convert page to HTML (simple job)

I need a simple script created that will read a specified webpage and convert it to HTML (plain text) and insert it into an large form field. Only the content within the tags should be returned. Additionally, a 'copy' button would allow the user to copy that HTML to the clipboard. You should be able to build this with .asp, java. This should be very simple. FOR EXAPMLE: read this webpage: [login to view URL] and return and insert into form field: (see the attached file)