// JavaScript Document

    function submitOnEnter(e, f) {
        var ENTER_KEY = 13;
        var code = "";

        if (window.event) // IE
        {
            code = e.keyCode;
        }
        else if (e.which) // Netscape/Firefox/Opera
        {
            code = e.which;
        }

        if (code == ENTER_KEY) {
            f.submit();
            return false;
        }
    }