function handleEnter(event, buttonId) {

    var keycode;
    if (window.event)
        keycode = window.event.keyCode;
    else if (event)
        keycode = event.which;
    else return true;

    // if key press was 'enter', simulate a click on the button passed as paremeter
    if (keycode == 13) {
        jQuery(document.getElementById(buttonId)).click();
        return false;
    } else
        return true;

}