function NavOver3(elem, farbe1, farbe2)
{elem.style.backgroundColor = farbe1;
elem.style.Color = farbe2;
}

function NavOut3(elem, farbe1, farbe2)
{elem.style.backgroundColor = farbe1;
elem.style.Color = farbe2;
}

function NavDown3(elem, farbe1, farbe2)
{elem.style.backgroundColor = farbe1;
elem.style.Color = farbe2;
}

function NavUp3(elem, farbe1, farbe2)
{elem.style.backgroundColor = farbe1;
elem.style.Color = farbe2;
}