function taferlbua () {
var rleft = Math.round(((document.body.clientWidth-890)/2)+722);
if (navigator.appName.indexOf("Opera") != -1)
{
 	 	document.getElementById('bua').style.position = 'absolute';
		document.getElementById('bua').style.top = '6px';
    document.getElementById('bua').style.left = rleft+'px';		
}
else if (navigator.appName.indexOf("Explorer") != -1)
{
	
	 	document.getElementById('bua').style.position = 'absolute';
		document.getElementById('bua').style.top = '6px';
    document.getElementById('bua').style.left = rleft+'px';	
}
else if (navigator.appName.indexOf("Netscape") != -1)
{
    	document.getElementById('bua').style.position = 'absolute';
		document.getElementById('bua').style.top = '6px';
    document.getElementById('bua').style.left = rleft+'px';		
}
else
{
    	document.getElementById('bua').style.position = 'absolute';
		document.getElementById('bua').style.top = '6px';
    document.getElementById('bua').style.left = rleft+'px';		
}

}

function Fensterweite () {
  if (window.innerWidth) {
    return window.innerWidth;
  } else if (document.body && document.body.offsetWidth) {
    return document.body.offsetWidth;
  } else {
    return 0;
  }
}

function Fensterhoehe () {
  if (window.innerHeight) {
    return window.innerHeight;
  } else if (document.body && document.body.offsetHeight) {
    return document.body.offsetHeight;
  } else {
    return 0;
  }
}

function neuAufbau () {
  if (Weite != Fensterweite() || Hoehe != Fensterhoehe())
    location.href = location.href;
}