browserName = navigator.appName;
browserVer = parseInt ( navigator.appVersion );
version = "n2";
if ( browserName == "Netscape" && browserVer >= 4 ) version = "n4";
if ( browserName == "Microsoft Internet Explorer" && browserVer >=4 ) version = "e4";
if ( version == "n4" || version == "e4" )
{
        hme_on = new Image ( 134, 94 );
        hme_on.src = "images/menu/hme_on.gif";
        aprs_on = new Image ( 134, 94 );
        aprs_on.src = "images/menu/aprs_on.gif";
        nstt_on = new Image ( 134, 94 );
        nstt_on.src = "images/menu/nstt_on.gif";
        pprf_on = new Image ( 134, 94 );
        pprf_on.src = "images/menu/pprf_on.gif";
        pacd_on = new Image ( 134, 94 );
        pacd_on.src = "images/menu/pacd_on.gif";
        plnt_on = new Image ( 134, 94 );
        plnt_on.src = "images/menu/plnt_on.gif";
        atv_on = new Image ( 134, 94 );
        atv_on.src = "images/menu/atv_on.gif";
        prdc_on = new Image ( 134, 94 );
        prdc_on.src = "images/menu/prdc_on.gif";
        fcm_on = new Image ( 134, 94 );
        fcm_on.src = "images/menu/fcm_on.gif";
        prg_on = new Image ( 134, 94 );
        prg_on.src = "images/menu/prg_on.gif";
        evn_on = new Image ( 134, 94 );
        evn_on.src = "images/menu/evn_on.gif";
        mmr_on = new Image ( 134, 94 );
        mmr_on.src = "images/menu/mmr_on.gif";
        cpl8_on = new Image ( 134, 94 );
        cpl8_on.src = "images/menu/cpl8_on.gif";
        cpl9_on = new Image ( 134, 94 );
        cpl9_on.src = "images/menu/cpl9_on.gif";
        lks_on = new Image ( 134, 94 );
        lks_on.src = "images/menu/lks_on.gif";
        hme_off = new Image ( 134, 94 );
        hme_off.src = "images/menu/hme_off.gif";
        aprs_off = new Image ( 134, 94 );
        aprs_off.src = "images/menu/aprs_off.gif";
        nstt_off = new Image ( 134, 94 );
        nstt_off.src = "images/menu/nstt_off.gif";
        pprf_off = new Image ( 134, 94 );
        pprf_off.src = "images/menu/pprf_off.gif";
        pacd_off = new Image ( 134, 94 );
        pacd_off.src = "images/menu/pacd_off.gif";
        plnt_off = new Image ( 134, 94 );
        plnt_off.src = "images/menu/plnt_off.gif";
        atv_off = new Image ( 134, 94 );
        atv_off.src = "images/menu/atv_off.gif";
        prdc_off = new Image ( 134, 94 );
        prdc_off.src = "images/menu/prdc_off.gif";
        fcm_off = new Image ( 134, 94 );
        fcm_off.src = "images/menu/fcm_off.gif";
        prg_off = new Image ( 134, 94 );
        prg_off.src = "images/menu/prg_off.gif";
        evn_off = new Image ( 134, 94 );
        evn_off.src = "images/menu/evn_off.gif";
        mmr_off = new Image ( 134, 94 );
        mmr_off.src = "images/menu/mmr_off.gif";
        cpl8_off = new Image ( 134, 94 );
        cpl8_off.src = "images/menu/cpl8_off.gif";
        cpl9_off = new Image ( 134, 94 );
        cpl9_off.src = "images/menu/cpl9_off.gif";
        lks_off = new Image ( 134, 94 );
        lks_off.src = "images/menu/lks_off.gif";
}

function button_on ( imgName )
{
        if ( version == "n4" || version == "e4" )
        {
                butOn = eval ( imgName + "_on.src" );
                document [imgName].src = butOn;
        }
}

function button_off ( imgName )
{
        if ( version == "n4" || version == "e4" )
        {
                butOff = eval ( imgName + "_off.src" );
                document [imgName].src = butOff;
        }
}