function toggleMe(a) {
  
	var e = document.getElementById(a);
	  
	if (!e) return true;
  
	if(e == document.getElementById("schalter")) {
    e.style.display="block";
		document.getElementById("hausarzt").style.display="none";
		document.getElementById("post").style.display="none";
  } 
	/*else {
    e.style.display="none"
  }*/
  
	if(e == document.getElementById("hausarzt")) {
    e.style.display="block";
		document.getElementById("schalter").style.display="none";
		document.getElementById("post").style.display="none";
  } 
	/*else {
    e.style.display="none"
  }*/
	
	if(e == document.getElementById("post")) {
    e.style.display="block";
		document.getElementById("schalter").style.display="none";
		document.getElementById("hausarzt").style.display="none";
  } 
	/*else {
    e.style.display="none"
  }*/
	
	return true;
}





/*
function toggleMe(a) {
  
	var e = document.getElementById(a);
	var schalter = document.getElementById("schalter");
	var hausarzt =document.getElementById("hausarzt");
	var post = document.getElementById("post");
  
	if (!e) return true;
  
	if(e.style.display=="none") {
    e.style.display="block"
  } 
	else {
    e.style.display="none"
  }
  
	return true;
}
*/