function showdiv(s) {
  var d = eval('document.showhide_'+s);
  var e = document.getElementById(s);
  var f = document.getElementById(s+'_more');

  if (d.src.match('plus-button.gif')=='plus-button.gif') {
    d.src="/common/images/minus-button.gif";
    e.style.overflow = "visible";
    e.style.height="auto";
    if (f != null) f.innerHTML = "less..."
  } else {
    d.src="/common/images/plus-button.gif" 
    e.style.overflow = "hidden";
    e.style.height = "1px";
    if (f != null) f.innerHTML = "more..."
  }
}