var breite = screen.width;
document.writeln('');
switch (breite)
{
case 640 : document.writeln(''); break;
case 800 : document.writeln(''); break;
case 1024 : document.writeln(''); break;
case 1152 : document.writeln(''); break;
case 1280 : document.writeln(''); break;
case 1600 : document.writeln(''); break;
default : if (breite < 1000)
{
document.writeln('');
}
else
{
document.writeln('');
};
break;
}