function getBrowser()
{
    var ver = ''
    BrName = navigator.appName;
    BrVer = parseInt(navigator.appVersion);
    if (BrName == 'Netscape' && BrVer == 2) ver = 'n2';
    else if (BrName == 'Netscape' && BrVer == 3) ver = 'n3';
    else if (BrName == 'Netscape' && BrVer >= 4) ver = 'n4';
    else if (BrName == 'Microsoft Internet Explorer' && BrVer >= 4) ver = 'ie4';
    else if (BrName == 'Microsoft Internet Explorer' && BrVer == 3) ver = 'ie3';
    else if (BrName == 'Microsoft Internet Explorer' && BrVer == 2) ver = 'ie2';
    else ver = 'other';
    return ver;
}

function goodBrowser()
{
    var b = getBrowser();
    if (b == 'ie3' || b == 'ie4' || b=='n3' || b=='n4') return(true);
    return(false);
}

function gotJava()
{
    return navigator.javaEnabled();
}