<!--
 
function popup(breite, hoehe, ziel){
	var _popwidth = breite;
	var _popheight = hoehe;
	_xpos = (screen.width - _popwidth) / 2;
	_ypos = (screen.height - _popheight) / 2;
	var _eigenschaften = "width=" + _popwidth + ",height=" + _popheight + ", menubar=no, left=" + _xpos  + ",top=" + _ypos + ", resizable=no, scrollbars=no";
	_popup = window.open(ziel,"popup",_eigenschaften);
}

function changepic(ziel){
	document.tunnel.src="images/pic_tunnel_"+ziel+".jpg";
}

  //-->