$(document).bind("contextmenu",function(e) {
     e.preventDefault();
});

$(document).keydown(function(event){
    if(event.keyCode==123){
    return false;
   }
else if(event.ctrlKey && event.shiftKey && event.keyCode==73){        
      return false;  //Prevent from ctrl+shift+i
   }
});

$(document).on("contextmenu",function(e){        
   e.preventDefault();
});