(function(a){a.fn.validCampo = function(b){a(this).on({keypress:function(a){var c = a.which, d = a.keyCode, e = String.fromCharCode(c).toLowerCase(), f = b; ( - 1 != f.indexOf(e) || 9 == d || 37 != c && 37 == d || 39 == d && 39 != c || 8 == d || 46 == d && 46 != c) && 161 != c || a.preventDefault()}})}})(jQuery);