jquery keypress event for cmd+s AND ctrl+s
===

Using one of the examples from a previous question I have:

    $(window).keypress(function(event) {
        if (!(event.which == 115 && event.ctrlKey) && !(event.which == 19)) return true;
        $("form input[name=save]").click();
        event.preventDefault();
        return false;
    });

Is it also possible to change this to work for the Mac cmd key? 

I have tried `(!(event.which == 115 && (event.cmdKey || event.ctrlKey)) && !(event.which == 19))` but this didn't work. 