function dis_prev1_off()
{
	var i=1;
	while(i<=6)
	{
		s="prev";
		s=s+i.toString();
		document.getElementById(s).style.display="none";
		i++;
	}
}
function dis_prev1_on()
{
	var i=1;
	while(i<=6)
	{
		s="prev";
		s=s+i.toString();
		document.getElementById(s).style.display="";
		i++;
	}
}
function dis_prev2_off()
{
	var i=7;
	while(i<=13)
	{
		s="prev";
		s=s+i.toString();
		document.getElementById(s).style.display="none";
		i++;
	}
}
function dis_prev2_on()
{
	var i=7;
	while(i<=13)
	{
		s="prev";
		s=s+i.toString();
		document.getElementById(s).style.display="";
		i++;
	}
}
function dis_off(n)
{
	var i=1;
	while(i<=n)
	{
		s="latin";
		s=s+i.toString();
		document.getElementById(s).style.display="none";
		i++;
	}
	alert("WAKTU UJIAN TELAH HABIS");
}
function vis_on(n)
{
	var i=1;
	while(i<=n)
	{
		s="latin";
		s=s+i.toString();
		document.getElementById(s).style.visibility="visible";		
		i++;
	}
	document.getElementById("tampil").value="Sembunyikan Latin";
	if(document.getElementById("tampil2"))	
		document.getElementById("tampil2").value="Sembunyikan Latin";
}
function vis_off(n)
{
	var i=1;
	while(i<=n)
	{
		s="latin";
		s=s+i.toString();
		document.getElementById(s).style.visibility="hidden";		
		i++;
	}
	document.getElementById("tampil").value="Tampilkan Latin";	
	if(document.getElementById("tampil2"))	
		document.getElementById("tampil2").value="Tampilkan Latin";		
}
function latin(n)
{
	
	if(document.getElementById("tampil").value=="Tampilkan Latin")
	{
		vis_on(n);
	}else
	{
		vis_off(n);
	}
}
function vis_on_pra(n)
{
	var i=1;
	while(i<=n)
	{
		s="latin";
		s=s+i.toString();
		document.getElementById(s).style.visibility="visible";		
		i++;
	}
	document.getElementById("tampil").value="Sembunyikan Latin / Jawaban";
	if(document.getElementById("tampil2"))	
		document.getElementById("tampil2").value="Sembunyikan Latin / Jawaban";
}
function vis_off_pra(n)
{
	var i=1;
	while(i<=n)
	{
		s="latin";
		s=s+i.toString();
		document.getElementById(s).style.visibility="hidden";		
		i++;
	}
	document.getElementById("tampil").value="Tampilkan Latin / Jawaban";	
	if(document.getElementById("tampil2"))	
		document.getElementById("tampil2").value="Tampilkan Latin / Jawaban";	
}
function latin_pra(n)
{
	
	if(document.getElementById("tampil").value=="Tampilkan Latin / Jawaban")
	{
		vis_on_pra(n);
	}else
	{
		vis_off_pra(n);
	}
}