function SubmitOnEnter(elementName) {

    if (event.which || event.keyCode) {
        if ((event.which == 13) || (event.keyCode == 13)) {
            button = document.getElementById(elementName);
            button.focus();
            button.click();
            return false;
        }

        else {
            return true;
        }
    }
    return true;
}