function HideContent(d) {
if(d.length < 1) { return; }
  if (!e) var e = window.event;
  var tg = (window.event) ? e.srcElement : e.target;
  if (tg.nodeName != 'DIV') return;
  var reltg = (e.relatedTarget) ? e.relatedTarget : e.toElement;
  while (reltg != tg && reltg.nodeName != 'BODY')
    reltg= reltg.parentNode
  if (reltg== tg) return;
document.getElementById(d).style.display = "none";
}
function HideAll(d) {
d = parseInt(d);
for (x=0; x<=19; x++) {

    if (d != x) { document.getElementById("reg"+x).style.display = "none"; }
}
}