<!--

function zeigemenus1() {
document.getElementById("spalte2").style.display = "none";
document.getElementById("spalte3").style.display = "none";
document.getElementById("spalte1").style.display = "block";
document.getElementById("menubar3").style.zIndex = "1";
document.getElementById("menubar2").style.zIndex = "2";
document.getElementById("menubar1").style.zIndex = "5";
}

function zeigemenus2() {
document.getElementById("spalte1").style.display = "none";
document.getElementById("spalte3").style.display = "none";
document.getElementById("spalte2").style.display = "block";
document.getElementById("menubar3").style.zIndex = "1";
document.getElementById("menubar2").style.zIndex = "5";
document.getElementById("menubar1").style.zIndex = "2";
}

function zeigemenus3() {
document.getElementById("spalte1").style.display = "none";
document.getElementById("spalte2").style.display = "none";
document.getElementById("spalte3").style.display = "block";
document.getElementById("menubar3").style.zIndex = "5";
document.getElementById("menubar2").style.zIndex = "2";
document.getElementById("menubar1").style.zIndex = "2";
}

//-->