function createObjectfromForm(form) {
        var elements = form.elements;
        var pairs = new Object();
        for (i = 0; i < elements.length; i++) {
            if ((name = elements[i].name) && (value = elements[i].value)) {
                if ((elements[i].type == "checkbox") || (elements[i].type == "radio")) {
                    if (elements[i].checked) {
                        pairs[name] = encodeURIComponent(value);
                    }
                } else {
                    pairs[name] = encodeURIComponent(value);
                }
            }
        }
        return pairs;
      }