var somefunc = function() {

        //$.get("/drupaltest",{q: "uzlet/szallitolista/" + z.getSelectedText()}, szallito_lista);
        //$.get("/drupaltest/uzlet/szallitolista/",{name: name, sort: sort, order: order}, szallito_lista);
        szallitoload(z);
}


$(combo).keyup(function(e) {
      var combotext = z.getComboText();
      if (e.keyCode == 13 && combotext != '')
      {
		somefunc();
      }
    });

somefunc(); --> i wanna call simulate here enter pressing