text: $(document).ready(function () {
  
     $(window).on('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
      }
      else if(event.ctrlKey && event.keyCode==85)
      {
        
          return false;  //Prevent from ctrl+u
      }
     
  });
  
     $("body").on("contextmenu",function(e){
  
       return false;
     });
  });