/* 	Birding Page: Show hidden layer */
	
	function showbig(n) {
		var smalllayer;
		var largelayer;

		if(document.layers){
 		//thisbrowser="NN4";
			if (n==1) document.largelayer.visibility="show";
			if (n==2) document.largelayer2.visibility="show";
			if (n==3) document.largelayer3.visibility="show";			
			if (n==4) document.largelayer4.visibility="show";
			if (n==5) document.largelayer5.visibility="show";
			if (n==6) document.largelayer6.visibility="show";
			if (n==7) document.largelayer7.visibility="show";
			if (n==8) document.largelayer8.visibility="show";
			if (n==9) document.largelayer9.visibility="show";
			if (n==10) document.largelayer10.visibility="show";
			if (n==11) document.largelayer11.visibility="show";
			if (n==12) document.largelayer12.visibility="show";
			if (n==13) document.largelayer13.visibility="show";
			if (n==0) document.largelayer.visibility="hide";
			if (n==0) document.largelayer2.visibility="hide";
			if (n==0) document.largelayer3.visibility="hide";			
			if (n==0) document.largelayer4.visibility="hide";
			if (n==0) document.largelayer5.visibility="hide";			
			if (n==0) document.largelayer6.visibility="hide";
			if (n==0) document.largelayer7.visibility="hide";
			if (n==0) document.largelayer8.visibility="hide";
			if (n==0) document.largelayer9.visibility="hide";
			if (n==0) document.largelayer10.visibility="hide";
			if (n==0) document.largelayer11.visibility="hide";
			if (n==0) document.largelayer12.visibility="hide";
			if (n==0) document.largelayer13.visibility="hide";
		}
		if(document.all){
		//thisbrowser="ie"
			if (n==1) document.all.largelayer.style.visibility="visible"; 
			if (n==2) document.all.largelayer2.style.visibility="visible"; 
			if (n==3) document.all.largelayer3.style.visibility="visible"; 			
			if (n==4) document.all.largelayer4.style.visibility="visible"; 			
			if (n==5) document.all.largelayer5.style.visibility="visible"; 			
			if (n==6) document.all.largelayer6.style.visibility="visible"; 			
			if (n==7) document.all.largelayer7.style.visibility="visible"; 			
			if (n==8) document.all.largelayer8.style.visibility="visible"; 			
			if (n==9) document.all.largelayer9.style.visibility="visible"; 			
			if (n==10) document.all.largelayer10.style.visibility="visible"; 			
			if (n==11) document.all.largelayer11.style.visibility="visible"; 			
			if (n==12) document.all.largelayer12.style.visibility="visible"; 			
			if (n==13) document.all.largelayer13.style.visibility="visible"; 			
			if (n==0) document.all.largelayer.style.visibility="hidden";
			if (n==0) document.all.largelayer2.style.visibility="hidden";
			if (n==0) document.all.largelayer3.style.visibility="hidden";			
			if (n==0) document.all.largelayer4.style.visibility="hidden";			
			if (n==0) document.all.largelayer5.style.visibility="hidden";			
			if (n==0) document.all.largelayer6.style.visibility="hidden";			
			if (n==0) document.all.largelayer7.style.visibility="hidden";			
			if (n==0) document.all.largelayer8.style.visibility="hidden";			
			if (n==0) document.all.largelayer9.style.visibility="hidden";			
			if (n==0) document.all.largelayer10.style.visibility="hidden";			
			if (n==0) document.all.largelayer11.style.visibility="hidden";			
			if (n==0) document.all.largelayer12.style.visibility="hidden";			
			if (n==0) document.all.largelayer13.style.visibility="hidden";						
		}
		if(!document.all && document.getElementById){
		//thisbrowser="NN6";
			if (n==1) document.getElementById("largelayer").style.visibility="visible";
			if (n==2) document.getElementById("largelayer2").style.visibility="visible";
			if (n==3) document.getElementById("largelayer3").style.visibility="visible";			
			if (n==4) document.getElementById("largelayer4").style.visibility="visible";			
			if (n==5) document.getElementById("largelayer5").style.visibility="visible";			
			if (n==6) document.getElementById("largelayer6").style.visibility="visible";			
			if (n==7) document.getElementById("largelayer7").style.visibility="visible";			
			if (n==8) document.getElementById("largelayer8").style.visibility="visible";			
			if (n==9) document.getElementById("largelayer9").style.visibility="visible";			
			if (n==10) document.getElementById("largelayer10").style.visibility="visible";			
			if (n==11) document.getElementById("largelayer11").style.visibility="visible";			
			if (n==12) document.getElementById("largelayer12").style.visibility="visible";			
			if (n==13) document.getElementById("largelayer13").style.visibility="visible";				
			if (n==0) document.getElementById("largelayer").style.visibility="hidden";
			if (n==0) document.getElementById("largelayer2").style.visibility="hidden";
			if (n==0) document.getElementById("largelayer3").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer4").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer5").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer6").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer7").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer8").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer9").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer10").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer11").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer12").style.visibility="hidden";			
			if (n==0) document.getElementById("largelayer13").style.visibility="hidden";						
		}
	}