function sel_option(s) {
if (s=="" || s=="100")
{
aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="1" )
{

aa.style.display = ""; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="2" )
{

aa.style.display = "none"; 
ab.style.display = ""; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="3" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = ""; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="4" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = ""; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="5" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = ""; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="6" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = ""; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="7" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = ""; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="8" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="9" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = ""; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="10" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = ""; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="11" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = ""; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="12" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="13" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = ""; 
an.style.display = "none"; 
ao.style.display = "none"; 
}
if (s=="14" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = ""; 
ao.style.display = "none"; 
}
if (s=="15" )
{

aa.style.display = "none"; 
ab.style.display = "none"; 
ac.style.display = "none"; 
ad.style.display = "none"; 
ae.style.display = "none"; 
af.style.display = "none"; 
ag.style.display = "none"; 
ah.style.display = "none";
ai.style.display = "none"; 
aj.style.display = "none"; 
ak.style.display = "none"; 
al.style.display = "none";
am.style.display = "none"; 
an.style.display = "none"; 
ao.style.display = ""; 
}
}