$(document).ready(function()
{
       $(document).bind("contextmenu",function(e){
              return false;
       });
});
 
  $(document).ready(function(){
    $(document).keydown(function(event) {
        if (event.ctrlKey==true && (event.which == '97' || event.which == '65')||(event.which == '115' || event.which == '83')) {
            //alert('thou. shalt. not. PASTE!');
            event.preventDefault();
         }
    });
});