// thumbnail pages navigator

	// zeigt navi für aktuelle thumbnail page
	function getTPN(page) {
		
		if (document.getElementById("thumbnails_" + (page+1)) || document.getElementById("thumbnails_" + (page-1)))	{
			
			if (document.getElementById("thumbnails_" + (page+1)))
				var next = "<a href='#' onclick='javascript:showTPN(" + (page+1) + ");' style='font-size:16px'>&rsaquo;&rsaquo;</a>";
			else
				var next = "";
				
			if (document.getElementById("thumbnails_" + (page-1)))
				var last = "<a href='#' onclick='javascript:showTPN(" + (page-1) + ");' style='font-size:16px'>&lsaquo;&lsaquo;</a>";
			else
				var last = "";
				
			document.getElementById("tpn").innerHTML = last + " " + next;
		}
		
	}
	
	// blendet bestimmte thumbnail page ein und alle anderen aus
	function showTPN(page) {
	
		var i = 1;
		while (document.getElementById("thumbnails_" + i)) {
			if (i != page)
				document.getElementById("thumbnails_" + i).style.display='none';	
			else
				document.getElementById("thumbnails_" + i).style.display='';	
			var i = i + 1;
		}
		getTPN(page);
		
	}