var nopic=new Image();
	nopic.src="layout/keinbild.gif";

	function ci(img_name)
	{
		eval('document.images.'+img_name+'.src=nopic.src');
		return true;
	}

	function csf()
	{
   		return (document.search_form.query.value=="")?false:true;
	}

	function pop(p)
	{
		window.open(p,'impressum','toolbar=no,location=no,status=no,menubar=no,resizable=no,scrollbars=no,width=400,height=400');
	}

	function un(u)
	{
		var v='';
		var map=new Array();
  		var s="abcdefghijklmnopqrstuvwxyz";

  		for (k=0;k<s.length;k++)
  		{
    		map[s.charAt(k)]=s.charAt((k+13)%26);
    		map[s.charAt(k).toUpperCase()]=s.charAt((k+13)%26).toUpperCase();
  		}

		for (k=0;k<u.length;k++)
		{
			p=u.charAt(k);
			v+=(p>='A' && p<='Z' || p>='a' && p<='z')?map[p]:p;
		}

		return v;
	}