// bpref = tab body prefix, hpref = tab header prefix
function seltab(bpref, hpref, id_max, selected) {
  if (! document.getElementById) return;
  for (i = 0; i <= id_max; i++) {
    if (! document.getElementById(bpref + i)) continue;
    if (i == selected) {
      document.getElementById(bpref + i).className = "open";
      document.getElementById(hpref + i).className = "open";
      document.getElementById(bpref + i).className = "open";
      document.getElementById(hpref + i).className = "open";
} else {
      document.getElementById(bpref + i).className = "close";
      document.getElementById(hpref + i).className = "close";
    }
  }
}


function seltab_bottom(bpref, hpref, id_max, selected) {
  if (! document.getElementById) return;
  window.scrollTo(0,0);
  seltab(bpref, hpref, id_max, selected);
}