function ShowHide(id) {
    obj = document.getElementsByTagName("div");
    if (obj[id].style.visibility == 'visible'){
    obj[id].style.visibility = 'hidden';
    }
    else {
    obj[id].style.visibility = 'visible';
      window.scrollBy(0,document.body.scrollHeight); // horizontal and vertical scroll increments
    	scrolldelay = setTimeout('pageScroll()',100); // scrolls every 100 milliseconds
    }
}