function suntab_aux(SunTabId, id)
{
  var SunTab = document.getElementById(SunTabId);
  var Tabs = SunTab.firstChild;
  while (Tabs.className != "Tabs" ) Tabs = Tabs.nextSibling;
  var Tab = Tabs.firstChild;
  var i   = 0;
  do
  {
    if (Tab.tagName == "A")
    {
      i++;
      Tab.href      = "javascript:suntab_switch('"+SunTabId+"', "+i+");";
      Tab.className = (i == id) ? "Active" : "";
      Tab.blur();
    }
  }
  while (Tab = Tab.nextSibling);
  var tabscreen = SunTab.firstChild;
  while (tabscreen.className != 'tabscreen') tabscreen = tabscreen.nextSibling;
  var tabzone = tabscreen.firstChild;
  var i    = 0;
  do
  {
    if (tabzone.className == 'tabzone')
    {
      i++;
      if (tabscreen.offsetHeight) tabzone.style.height = (tabscreen.offsetHeight-2)+"px";
      tabzone.style.overflow = "auto";
      tabzone.style.display  = (i == id) ? 'block' : 'none';
    }
  }
  while (tabzone = tabzone.nextSibling);
}
function suntab_switch(SunTabId, id) { suntab_aux(SunTabId, id); }
function suntab_initialize(SunTabId) { suntab_aux(SunTabId,  1); }