Disable save as, copy and print from browsers

I do alot of typing to post job openings on my site then I found out that most of people go to mysite to copy and paste on their own sites, leaving my stress of typing all the documents to zero, I need a script that could disable the Print, copy and the save as function(on the IE,firefox,opera,e.t.c)? from thosee who browse my site. ## Deliverables the use of ctrl A to select all content on my page should also be disabled