// 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).style.display = "block";
	  document.getElementById(hpref + i).className = "open";
	} else {
	  document.getElementById(bpref + i).style.display = "none";
	  document.getElementById(hpref + i).className = "close";
	}
  }
}
window.onload = function() {
	seltab('box', 'tab', 10, 1);
}