<!--
var js_ok = false;
if ( navigator.appName.substring(0,9) == "Microsoft" &&
parseInt(navigator.appVersion) >= 4 ) js_ok = true;
if ( navigator.appName.substring(0.8) == "Netscape" &&
parseInt(navigator.appVersion) >= 3 ) js_ok = true;

if (js_ok) {
  lro = -1;
  marker = new Image(8,20);
  marker.src = "/gfx/marker.gif";
  empty = new Image(8,20);
  empty.src = "/gfx/null.gif";
}

function bup(iname){
  if (js_ok) {
    document.images[iname].src = empty.src;
    lro = -1;
  }
}

function bdn(iname){
  if (js_ok) {
    if(lro > -1) {
      bup(lro);
    }
    document.images[iname].src = marker.src;
    lro = iname;
  }
} // -->