<!--
  browsok = (((navigator.appName == "Netscape")
  && (parseInt(navigator.appVersion) >= 3))
  || ((navigator.appName == "Microsoft Internet Explorer")
  && (parseInt(navigator.appVersion)>=3)));
  if(browsok){
    // MouseOn   
    // Note: the WWW is for the WIDTH, HHH is for the HEIGHT
 
       prev1 = new Image(49, 18);
       prev1.src = "images/control_prev_on.gif";
       chapt1 = new Image(124, 18);
       chapt1.src = "images/control_chapt_on.gif";
       next1 = new Image(51, 18);
       next1.src = "images/control_next_on.gif";


    // MouseOff

       prev0 = new Image(49, 18);
       prev0.src = "images/control_prev_off.gif";
       chapt0 = new Image(124, 18);
       chapt0.src = "images/control_chapt_off.gif";
       next0 = new Image(51, 18);
       next0.src = "images/control_next_off.gif";
      
  }
  function BNB_mouseon(n){
       if(browsok){
            imageON = eval(n + "1.src");
            document [n].src = imageON;
            }
  }
  function BNB_mouseoff(n){
       if(browsok){
  imageOFF = eval(n + "0.src");
       document [n].src = imageOFF;
            }
  }
  // -->