var refer=true;
function box_allgemein() {
if (refer) {
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_allgemein.style.visibility="visible";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}
function box_ankauf() {
if (refer) {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="visible";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}
function box_verkauf() {
if (refer) {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="visible";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}
function box_tausch() {
if (refer) {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="visible";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}
function box_Firmenpraesentation() {
if (refer) {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="visible";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}
function box_miete() {
if (refer) {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="visible";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}
function box_reparatur() {
if (refer) {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="visible";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}
function box_gebrauchtboerse() {
if (refer) {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="visible";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}
function box_ladungstrgr() {
if (refer) {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="visible";
  refer=false;
}
else {
  document.all.box_allgemein.style.visibility="hidden";
  document.all.box_ankauf.style.visibility="hidden";
  document.all.box_verkauf.style.visibility="hidden";
  document.all.box_Firmenpraesentation.style.visibility="hidden";
  document.all.box_miete.style.visibility="hidden";
  document.all.box_reparatur.style.visibility="hidden";
  document.all.box_gebrauchtboerse.style.visibility="hidden";
  document.all.box_ladungstrgr.style.visibility="hidden";
  refer=true;
}
}