function openhdv(id) {
document.getElementById('preloader').style.width = '100%';
document.getElementById('preloader').style.height = '100%';
document.getElementById('preloader').style.opacity = 1;
document.getElementById('preloader').style.left = 0;
document.getElementById('preloader').style.top = 0;
rwshowcomment(id);
}

function closehdv() {
document.getElementById('preloader').style.width = '4px';
document.getElementById('preloader').style.height = '4px';
document.getElementById('preloader').style.left = '-9999px';
document.getElementById('preloader').style.top = '-9999px';
document.getElementById('preloader').style.opacity =0;
}