function UpdateTitle()
{
    document.title=parent.Mitte.document.title;
}

function Browser ()
{
    var agt=navigator.userAgent.toLowerCase()

    var is_major = parseInt(navigator.appVersion);
    var is_minor = parseFloat(navigator.appVersion);

    var is_nav  = ((agt.indexOf('mozilla')!=-1) && (agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1) && (agt.indexOf('opera')==-1)
                && (agt.indexOf('webtv')==-1) && (agt.indexOf('hotjava')==-1));
    var is_nav2 = (is_nav && (is_major == 2));
    var is_nav3 = (is_nav && (is_major == 3));
    var is_nav4 = (is_nav && (is_major == 4));
    var is_nav4up = (is_nav && (is_major >= 4));
    var is_navonly      = (is_nav && ((agt.indexOf(";nav") != -1) ||
                          (agt.indexOf("; nav") != -1)) );
    var is_nav6 = (is_nav && (is_major == 5));
    var is_nav6up = (is_nav && (is_major >= 5));


    var is_ie     = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));
    var is_ie3    = (is_ie && (is_major < 4));
    var is_ie4    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5")==-1) );
    var is_ie5    = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.0")!=-1) );
    var is_ie5_5  = (is_ie && (is_major == 4) && (agt.indexOf("msie 5.5") !=-1));
    var is_ie6    = (is_ie && (is_major == 4) && (agt.indexOf("msie 6.0") !=-1));

    var is_opera  = (agt.indexOf("opera") != -1)
    // *** PLATFORM ***
    var is_win   = ( (agt.indexOf("win")!=-1) || (agt.indexOf("16bit")!=-1) )
    var is_mac   = (agt.indexOf("mac")!=-1)

<!--
// *** DYNAMICALLY WRITE APPROPRIATE STYLESHEET ***
//Windows Navigator 6 und höher
if (is_nav6up && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/navpcstyles.css" TYPE="text/css">');
}
//Windows Navigator 4 und höher
else if (is_nav4up && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/navpcstyles.css" TYPE="text/css">');
}
//Windows Navigator 4
else if (is_nav4 && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/navpcstyles.css" TYPE="text/css">');
}
//Windows IE 6
else if (is_ie6 && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/ie5pcstyles.css" TYPE="text/css">');
}
//Windows IE 5.5
else if (is_ie5_5 && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/ie5pcstyles.css" TYPE="text/css">');
}
//Windows IE 5
else if (is_ie5 && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/ie5pcstyles.css" TYPE="text/css">');
}
//Windows IE 4
else if (is_ie4 && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/iepcstyles.css" TYPE="text/css">');
}
//Windows IE 3
else if (is_ie3 && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/iepcstyles.css" TYPE="text/css">');
}
//Opera
else if (is_opera && is_win)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/operastyles.css" TYPE="text/css">');
}
//Mac Navigator 6 oder höher
else if (is_nav6up && is_mac)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/nav6macstyles.css" TYPE="text/css">');
}
//Mac Navigator 4 oder höher
else if (is_nav4up && is_mac)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/nav4macstyles.css" TYPE="text/css">');
}
//Mac IE 5 oder höher
else if (is_ie5 && is_mac)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/ie5macstyles.css" TYPE="text/css">');
}
//Mac IE 4
else if (is_ie4 && is_mac)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/iemacstyles.css" TYPE="text/css">');
}
//Mac IE3
else if (is_ie3 && is_mac)
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/iemacstyles.css" TYPE="text/css">');
}
else
{
    document.write('<link REL=STYLESHEET HREF="stylesheets/default_styles.css" TYPE="text/css">');
}

}

Browser();