var seclvl = new Array("sec1","sec2","sec3","sec4","sec5");
var topmenu = new Array("top1","top2","top3","top4","top5");
function zeig(identnr) {
document.getElementById(seite).style.color="#ffffff";
document.getElementById("sec1").style.visibility="hidden";
document.getElementById("sec2").style.visibility="hidden";
document.getElementById("sec3").style.visibility="hidden";
document.getElementById("sec4").style.visibility="hidden";
document.getElementById("sec5").style.visibility="hidden";
document.getElementById(seclvl[identnr]).style.visibility="visible";
document.getElementById("top1").style.color="#686a6c";
document.getElementById("top2").style.color="#686a6c";
document.getElementById("top3").style.color="#686a6c";
document.getElementById("top4").style.color="#686a6c";
document.getElementById("top5").style.color="#686a6c"; 
document.getElementById(topmenu[identnr]).style.color="#ffffff";
}