var nprev,ntagprev;
function nshow(obj){
	if(nprev==null){nprev=document.getElementById("ncon1");}
	nprev.style.display="none";
	document.getElementById("ncon"+obj).style.display="block";
	nprev=document.getElementById("ncon"+obj);
	if(ntagprev==null){ntagprev=document.getElementById("ntag1");}
	ntagprev.className="";
	document.getElementById("ntag"+obj).className="tagA";
	ntagprev=document.getElementById("ntag"+obj);
}

var nprev1,ntagprev1;
function n1show(obj){
	if(nprev1==null){nprev1=document.getElementById("n1con1");}
	nprev1.style.display="none";
	document.getElementById("n1con"+obj).style.display="block";
	nprev1=document.getElementById("n1con"+obj);
	if(ntagprev1==null){ntagprev1=document.getElementById("nta1g1");}
	ntagprev1.className="";
	document.getElementById("nta1g"+obj).className="tag1A";
	ntagprev1=document.getElementById("nta1g"+obj);
}

var nprev2,ntagprev2;
function n2show(obj){
	if(nprev2==null){nprev2=document.getElementById("n2con1");}
	nprev2.style.display="none";
	document.getElementById("n2con"+obj).style.display="block";
	nprev2=document.getElementById("n2con"+obj);
	if(ntagprev2==null){ntagprev2=document.getElementById("nta2g1");}
	ntagprev2.className="";
	document.getElementById("nta2g"+obj).className="tag2A";
	ntagprev2=document.getElementById("nta2g"+obj);
}