<!--
browserName = navigator.appName;
version = "";
     browserVer = parseInt(navigator.appVersion);
             if (browserName == "Netscape" && browserVer >= 3) version = "n3";
             if (browserName == "Microsoft Internet Explorer" && browserVer >= 4) version = "n3";


             if (version == "n3")
             {
       a_on = new Image();
             a_on.src = "buttons/btn1b.gif";
                                a_off = new Image();
             a_off.src = "buttons/btn1a.gif";
       b_on = new Image();
             b_on.src = "buttons/btn2b.gif";
                                b_off = new Image();
             b_off.src = "buttons/btn2a.gif";
       c_on = new Image();
             c_on.src = "buttons/btn3b.gif";
                                c_off = new Image();
             c_off.src = "buttons/btn3a.gif";
       d_on = new Image();
             d_on.src = "buttons/btn4b.gif";
                                d_off = new Image();
             d_off.src = "buttons/btn4a.gif";
       e_on = new Image();
             e_on.src = "buttons/btn5b.gif";
                                e_off = new Image();
             e_off.src = "buttons/btn5a.gif";
       f_on = new Image();
             f_on.src = "buttons/btn6b.gif";
                                f_off = new Image();
             f_off.src = "buttons/btn6a.gif";
       g_on = new Image();
             g_on.src = "buttons/btn7b.gif";
                                g_off = new Image();
             g_off.src = "buttons/btn7a.gif";
       h_on = new Image();
             h_on.src = "buttons/btn8b.gif";
                                h_off = new Image();
             h_off.src = "buttons/btn8a.gif";
       i_on = new Image();
             i_on.src = "buttons/btn9b.gif";
                                i_off = new Image();
             i_off.src = "buttons/btn9a.gif";
       j_on = new Image();
             j_on.src = "buttons/btn10b.gif";
                                j_off = new Image();
             j_off.src = "buttons/btn10a.gif";
       k_on = new Image();
             k_on.src = "buttons/btn11b.gif";
                                k_off = new Image();
             k_off.src = "buttons/btn11a.gif";
       l_on = new Image();
             l_on.src = "buttons/btn12b.gif";
                                l_off = new Image();
             l_off.src = "buttons/btn12a.gif";
       m_on = new Image();
             m_on.src = "buttons/btn13b.gif";
                                m_off = new Image();
             m_off.src = "buttons/btn13a.gif";
       n_on = new Image();
             n_on.src = "buttons/btn14b.gif";
                                n_off = new Image();
             n_off.src = "buttons/btn14a.gif";
       o_on = new Image();
             o_on.src = "buttons/btn15b.gif";
                                o_off = new Image();
             o_off.src = "buttons/btn15a.gif";
       p_on = new Image();
             p_on.src = "buttons/btn16b.gif";
                                p_off = new Image();
             p_off.src = "buttons/btn16a.gif";
             }

     function img_act(imgName)
     {
             if (version == "n3") 
             {
             imgOn = eval(imgName + "_on.src");
             document [imgName].src = imgOn;
             }
     }

     function img_inact(imgName)
     {
             if (version == "n3") 
             {
             imgOff = eval(imgName + "_off.src");
             document [imgName].src = imgOff;
             }
     }
//-->