var js_ok = false;
var selected = "";

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;

function hi_button(pic_load, pic_over, pic_active, desc) {
  if (js_ok) {
    this.pic = new Image();
    this.pic.src = pic_load;
    this.pic_active = new Image();
    this.pic_active.src = pic_active;
    this.pic_over = new Image();
    this.pic_over.src = pic_over;
    this.text = desc;
  }
}

function hiliteon(id) {
  if (js_ok) {
    if (selected != id)
    {
     document[id].src = hi_but[id].pic_active.src;
    };
    window.status = hi_but[id].text;
  }
}

function hiliteoff(id) {
  if (js_ok) {
    if (selected != id)
    {
      document[id].src = hi_but[id].pic.src;
    };
    window.status = "";
  }
}

function hiliteactive(id) {
  if (js_ok) {

    if (selected != "")
    {
     document[selected].src = hi_but[selected].pic.src;
    };

    document[id].src = hi_but[id].pic_active.src;
    window.status = "";
    selected = id;
  }
}