function Blaettern(Richtung)
{
 zeige = zeige + Richtung;
 if(zeige > Bild.length - 1) zeige = 0;
 else if(zeige < 0) zeige = Bild.length - 1;
 
  document.images.Bildbereich.src=Bild[zeige].src;
  textschreiben(zeige, 'textbereich');
  }
 
 function textschreiben(zeige, id)
 {
  if (document.getElementById)
	{
		x = document.getElementById(id);
		x.innerHTML = '';
		x.innerHTML = text[zeige];
	}
	else if (document.all)
	{
		x = document.all[id];
		x.innerHTML = text[zeige];
	}
	else if (document.layers)
	{
		x = document.layers[id];
		x.document.open();
		x.document.write(text[zeige]);
		x.document.close();
	}
 
 }

//decrypt helper function
		function decryptCharcode(n,start,end,offset)	{
			n = n + offset;
			if (offset > 0 && n > end)	{
				n = start + (n - end - 1);
			} else if (offset < 0 && n < start)	{
				n = end - (start - n - 1);
			}
			return String.fromCharCode(n);
		}
			// decrypt string
		function decryptString(enc,offset)	{
			var dec = "";
			var len = enc.length;
			for(var i=0; i < len; i++)	{
				var n = enc.charCodeAt(i);
				if (n >= 0x2B && n <= 0x3A)	{
					dec += decryptCharcode(n,0x2B,0x3A,offset);	// 0-9 . , - + / :
				} else if (n >= 0x40 && n <= 0x5A)	{
					dec += decryptCharcode(n,0x40,0x5A,offset);	// A-Z @
				} else if (n >= 0x61 && n <= 0x7A)	{
					dec += decryptCharcode(n,0x61,0x7A,offset);	// a-z
				} else {
					dec += enc.charAt(i);
				}
			}
			return dec;
		}
			// decrypt spam-protected emails
		function linkTo_UnCryptMailto(s)	{
			location.href = decryptString(s,-1);
		}