Thanks Jörn! The link you send me was very helpfull for me. For solving my case I used: $ <http://docs.jquery.com/Core/%24>("#myinput").*rules*("add", { required: true, minlength: 2, messages: { required: "Required input", minlength: jQuery.format("Please, at least {0} characters are necessary") } }); $ <http://docs.jquery.com/Core/%24>("#myinput").*rules*("remove");
Thanks very much!!! sole