Select the page content is prohibited

 

  body { 
            -moz-User-SELECT : none ; / * Firefox * / 
            -webkit-User-SELECT : none ; / * WebKit browser * / 
            -ms-User-SELECT : none ; / * the IE10 * / 
            -khtml-User -Select : none ; / * older browsers * / 
            the User-the SELECT : none ;
        }