error remote path plugin validate jquery

Hi EE
i have a problem about path for validate plugin of Jquery
this is my js script:
*****
      var validator = $("#tipformins").validate({
            rules: {
                  cod: {
                        required: true,
                        number: true,
                        remote: "/remote/val_cod_tipGlass2.php"
                  },
                  tipology: "required"
            },
            messages: {
                  cod: {
                        required: "Inserire codice tipologia",
                        number: "formato numerico",
                        remote: jQuery.format("Codice {0} gia' esistente negli archivi!")
                        },
                  tipology: "Nome categoria prodotto"
            }
      });
*****

so , its dont work
while if I copy val_cod_tipGlass2.php in the same directory of primary page and change the code into
****
      var validator = $("#tipformins").validate({
            rules: {
                  cod: {
                        required: true,
                        number: true,
                        remote: "val_cod_tipGlass2.php"
                  },
                  tipology: "required"
            },
            messages: {
                  cod: {
                        required: "Inserire codice tipologia",
                        number: "formato numerico",
                        remote: jQuery.format("Codice {0} gia' esistente negli archivi!")
                        },
                  tipology: "Nome categoria prodotto"
            }
      });
***

it's work fine

maybe I make error in the path from

remote: "/remote/val_cod_tipGlass2.php"

to

remote: "val_cod_tipGlass2.php"


????

regards
Denis