function fenster (seite1, seite2) {
parent.frames["leftFrame"].location.href = seite1;
parent.frames["mainFrame"].location.href = seite2;
}

function wechsel (seite1, seite2, pos) {
parent.frames[0].location.href = seite1;
parent.frames[2].location.href = seite2;
document.all["Weiss1"].style.visibility = "hidden";
document.all["Weiss3"].style.visibility = "hidden";
document.all["Weiss4"].style.visibility = "hidden";
document.all["Weiss5"].style.visibility = "hidden";
document.all["Weiss6"].style.visibility = "hidden";
document.all["Weiss7"].style.visibility = "hidden";
document.all.nl1.style.color = "#333333";
document.all.nl3.style.color = "#333333";
document.all.nl4.style.color = "#333333";
document.all.nl5.style.color = "#333333";
document.all.nl6.style.color = "#333333";


if (pos == 1) {
document.all.nl1.style.color = "#D21C1B";
document.all["Weiss1"].style.visibility = "visible";
}
if (pos == 3) {
document.all.nl3.style.color = "#D21C1B";
document.all["Weiss3"].style.visibility = "visible";
}
if (pos == 4) {
document.all.nl4.style.color = "#D21C1B";
document.all["Weiss4"].style.visibility = "visible";
}
if (pos == 5) { 
document.all.nl5.style.color = "#D21C1B";
document.all["Weiss5"].style.visibility = "visible";
}
if (pos == 6) { 
document.all.nl6.style.color = "#D21C1B";
document.all["Weiss6"].style.visibility = "visible";
}
}