function setNavCol(x,y){
        document.getElementById(x).style.background="#ccc";
		document.getElementById(y).style.color="#000";
} 
function setNavColBack(x,y){
        document.getElementById(x).style.background="#fff";
		document.getElementById(y).style.color="#999";
}

clicked=0;
function di(){
	document.images.bulle.src='pix/bulle_baer_r.gif';
	document.getElementById("b1").style.color="#BD0F1F";
	}
function du(){
	if (clicked ==0){
		document.images.bulle.src='pix/bulle_baer_g.gif';
		document.getElementById("b1").style.color="#999";
		}
	}
function da(){
	clicked=1;
	document.images.bulle.src='pix/bulle_baer_r.gif';
	document.getElementById("b1").style.color="#BD0F1F";
	}
function de(){
	clicked=0;
	document.images.bulle.src='pix/bulle_baer_g.gif';
	document.getElementById("b1").style.color="#999";
	popdown();
	}
// Script by Thomas Stich
// http://www.stichpunkt.de/beitrag/popup.html
// use it if you like it

var pop = null;

function popdown() {
  if (pop && !pop.closed) pop.close();
  //alert ("pop");
}

function popup(obj,w,h) {
  var url = (obj.getAttribute) ? obj.getAttribute('href') : obj.href;
  if (!url) return true;
  w = (w) ? w += 20 : 150;  // 150px*150px is the default size
  h = (h) ? h += 25 : 150;
  var args = 'width='+w+',height='+h+',resizable';
  popdown();
  pop = window.open(url,'',args);
  return (pop) ? false : true;
}

window.onunload = popdown;
window.onfocus = de;