function elshow(ename)
{//seit  neuem rte parentNode.nextSibling wegem zusätzlichem div-tag
	var mydiv = ename.parentNode.nextSibling;
    while(mydiv.nodeType!=1){
       mydiv=mydiv.nextSibling;
    }

 if(mydiv.className == 'elhide')
 {
  mydiv.className = 'elshow';
 }
 else
 {
  mydiv.className = 'elhide';
 }

  //document.getElementById("xyz").setAttribute("class", "other_one");
}

function elshowplus(ename)
{
	var mydiv = ename.parentNode.nextSibling;
    while(mydiv.nodeType!=1){
       mydiv=mydiv.nextSibling;
    }

 if(mydiv.className == 'el2hide')
 {
  mydiv.className = 'el2show';
  ename.className = 'showconta';
 }
 else
 {
  mydiv.className = 'el2hide';
  ename.className = 'showcont';
  
 }

  //document.getElementById("xyz").setAttribute("class", "other_one");
}

function display(bereich) {

var stat = document.getElementById(bereich).style.display;
var btn = bereich + "_btn";
switch(bereich) {
	case "tleft":
		document.getElementById("tleft").style.display = 'block';
		document.getElementById("tcontent").style.display = 'none';
		document.getElementById("tright").style.display = 'none';
		document.getElementById("tleft_btn").className = 'hilite';
		document.getElementById("tright_btn").className = '';
		document.getElementById("tcontent_btn").className = '';
		break;
	case "tcontent":
		document.getElementById("tleft").style.display = 'none';
		document.getElementById("tcontent").style.display = 'block';
		document.getElementById("tright").style.display = 'none';
		document.getElementById("tleft_btn").className = '';
		document.getElementById("tcontent_btn").className = 'hilite';
		document.getElementById("tright_btn").className = '';
		break;
	case "tright":
		document.getElementById("tleft").style.display = 'none';
		document.getElementById("tcontent").style.display = 'none';
		document.getElementById("tright").style.display = 'block';
		document.getElementById("tleft_btn").className = '';
		document.getElementById("tcontent_btn").className = '';
		document.getElementById("tright_btn").className = 'hilite';
		break;
	}
	
}