function showhide (id, me) {
  var node = document.getElementById(id);
	node.style.display = node.style.display != 'none' ? 'none' : 'block';
	if (me) {
	  var tnode = me.firstChild;
	  if (tnode.src) {
		if (tnode.src.match(/plus/)) {
		  tnode.src = tnode.src.replace(/plus/, "minus");
		  tnode.alt = "Weniger";
		  tnode.title = "Weniger";
		} else {
		  tnode.src = tnode.src.replace(/minus/, "plus");
		  tnode.alt = "Mehr";
		  tnode.title = "Mehr";
		}

	  } else {
		var mol = tnode.nodeValue.substring(2);
		tnode.nodeValue = tnode.nodeValue.substring(0,2) + (mol == "mehr" ? "weniger" : "mehr");
	  }
	}
	return false;
}