function swap_zwxx(tt){
		switch(tt){
			case"link5":
			document.getElementById("link5").style.display = "block";
			document.getElementById("link7").style.display = "none";
			document.getElementById("link8").style.display = "none";
			document.getElementById("link9").style.display = "none";
			document.getElementById("link10").style.display = "none";
			document.getElementById("link16").style.display = "none";
			document.getElementById("link22").style.display = "none";
			break;
			
			
			case"link7":
			document.getElementById("link5").style.display = "none";
			document.getElementById("link7").style.display = "block";
			document.getElementById("link8").style.display = "none";
			document.getElementById("link9").style.display = "none";
			document.getElementById("link10").style.display = "none";
			document.getElementById("link16").style.display = "none";
			document.getElementById("link22").style.display = "none";
			break;
			
			case"link8":
			document.getElementById("link5").style.display = "none";
			document.getElementById("link7").style.display = "none";
			document.getElementById("link8").style.display = "block";
			document.getElementById("link9").style.display = "none";
			document.getElementById("link10").style.display = "none";
			document.getElementById("link16").style.display = "none";
			document.getElementById("link22").style.display = "none";
			break;
			
			case"link9":
			document.getElementById("link5").style.display = "none";
			document.getElementById("link7").style.display = "none";
			document.getElementById("link8").style.display = "none";
			document.getElementById("link9").style.display = "block";
			document.getElementById("link10").style.display = "none";
			document.getElementById("link16").style.display = "none";
			document.getElementById("link22").style.display = "none";
			break;
			
			case"link10":
			document.getElementById("link5").style.display = "none";
			document.getElementById("link7").style.display = "none";
			document.getElementById("link8").style.display = "none";
			document.getElementById("link9").style.display = "none";
			document.getElementById("link10").style.display = "block";
			document.getElementById("link16").style.display = "none";
			document.getElementById("link22").style.display = "none";
			break;
			
			case"link16":
			document.getElementById("link5").style.display = "none";
			document.getElementById("link7").style.display = "none";
			document.getElementById("link8").style.display = "none";
			document.getElementById("link9").style.display = "none";
			document.getElementById("link10").style.display = "none";
			document.getElementById("link16").style.display = "block";
			document.getElementById("link22").style.display = "none";
			break;
			
			case"link22":
			document.getElementById("link5").style.display = "none";
			document.getElementById("link7").style.display = "none";
			document.getElementById("link8").style.display = "none";
			document.getElementById("link9").style.display = "none";
			document.getElementById("link10").style.display = "none";
			document.getElementById("link16").style.display = "none";
			document.getElementById("link22").style.display = "block";
			break;
			
			case"link12":
			document.getElementById("link12").style.display = "block";
			document.getElementById("link13").style.display = "none"; 
			document.getElementById("link14").style.display = "none";
			document.getElementById("link15").style.display = "none";
			break;
			
			case"link13":
			document.getElementById("link12").style.display = "none";
			document.getElementById("link13").style.display = "block"; 
			document.getElementById("link14").style.display = "none";
			document.getElementById("link15").style.display = "none";
			break;
			
			case"link14":
			document.getElementById("link12").style.display = "none";
			document.getElementById("link13").style.display = "none"; 
			document.getElementById("link14").style.display = "block";
			document.getElementById("link15").style.display = "none";
			break;
			
			case"link15":
			document.getElementById("link12").style.display = "none";
			document.getElementById("link13").style.display = "none"; 
			document.getElementById("link14").style.display = "none";
			document.getElementById("link15").style.display = "block";
			break;
			
			case"link20":
			document.getElementById("link20").style.display = "block";
			document.getElementById("link21").style.display = "none";
			document.getElementById("link25").style.display = "none";
			break;
			
			case"link21":
			document.getElementById("link20").style.display = "none";
			document.getElementById("link21").style.display = "block";
			document.getElementById("link25").style.display = "none";
			break;
			
			case"link25":
			document.getElementById("link20").style.display = "none";
			document.getElementById("link21").style.display = "none";
			document.getElementById("link25").style.display = "block";
			break;
		}
	}
	
	function doZoom(size) {
        var zoom = document.all ? document.all['Zoom'] : document.getElementById('Zoom');
        zoom.style.fontSize = size + 'px';
    }