function changesub()
{
var selectcat = document.getElementById("categ");
var selectsub0 = document.getElementById("subcat0");
var selectsub1 = document.getElementById("subcat1");
var selectsub2 = document.getElementById("subcat2");
var selectsub3 = document.getElementById("subcat3");
var selectsub4 = document.getElementById("subcat4");
var selectsub5 = document.getElementById("subcat5");
var selectsub6 = document.getElementById("subcat6");
var selectsub7 = document.getElementById("subcat7");
var selectsub8 = document.getElementById("subcat8");
var selectsub9 = document.getElementById("subcat9");
var selectsub10 = document.getElementById("subcat10");
var selectsub11 = document.getElementById("subcat11");
var selectsub12 = document.getElementById("subcat12");
var selectsub13 = document.getElementById("subcat13");
var selectsub14 = document.getElementById("subcat14");
var selectsub15 = document.getElementById("subcat15");
if (selectcat.value=="0")
  {
   selectsub0.className="showsub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="1")
  {
   selectsub0.className="hidesub";
   selectsub1.className="showsub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="2")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="showsub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="3")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="showsub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="4")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="showsub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="5")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="showsub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="6")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="showsub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="7")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="showsub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="8")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="showsub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="9")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="showsub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="10")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="showsub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="11")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="showsub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}

if (selectcat.value=="12")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="showsub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}

if (selectcat.value=="13")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="showsub";
   selectsub14.className="hidesub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="14")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="showsub";
   selectsub15.className="hidesub";
}
if (selectcat.value=="15")
  {
   selectsub0.className="hidesub";
   selectsub1.className="hidesub";
   selectsub2.className="hidesub";
   selectsub3.className="hidesub";
   selectsub4.className="hidesub";
   selectsub5.className="hidesub";
   selectsub6.className="hidesub";
   selectsub7.className="hidesub";
   selectsub8.className="hidesub";
   selectsub9.className="hidesub";
   selectsub10.className="hidesub";
   selectsub11.className="hidesub";
   selectsub12.className="hidesub";
   selectsub13.className="hidesub";
   selectsub14.className="hidesub";
   selectsub15.className="showsub";
}





}