function showthis1(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item1").style.display = "none";
      document.getElementById("item2").style.display = "none";
      document.getElementById("item3").style.display = "none";
      document.getElementById("item4").style.display = "none";
      document.getElementById("item5").style.display = "none";
      document.getElementById("item6").style.display = "none";
      document.getElementById("item7").style.display = "none";
      document.getElementById("item8").style.display = "none";
      document.getElementById("item9").style.display = "none";
      document.getElementById("item10").style.display = "none";
      document.getElementById("item11").style.display = "none";
      document.getElementById("item3_1").style.display = "none";
      document.getElementById("item4_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}

function showthis2(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item21").style.display = "none";
      document.getElementById("item22").style.display = "none";
      document.getElementById("item23").style.display = "none";
      document.getElementById("item24").style.display = "none";
      document.getElementById("item25").style.display = "none";
      document.getElementById("item26").style.display = "none";
      document.getElementById("item27").style.display = "none";
      document.getElementById("item28").style.display = "none";
      document.getElementById("item29").style.display = "none";
      document.getElementById("item30").style.display = "none";
      document.getElementById("item31").style.display = "none";
      document.getElementById("item23_1").style.display = "none";
      document.getElementById("item24_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}

function showthis3(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item41").style.display = "none";
      document.getElementById("item42").style.display = "none";
      document.getElementById("item43").style.display = "none";
      document.getElementById("item44").style.display = "none";
      document.getElementById("item45").style.display = "none";
      document.getElementById("item46").style.display = "none";
      document.getElementById("item47").style.display = "none";
      document.getElementById("item48").style.display = "none";
      document.getElementById("item49").style.display = "none";
      document.getElementById("item50").style.display = "none";
      document.getElementById("item51").style.display = "none";
      document.getElementById("item43_1").style.display = "none";
      document.getElementById("item44_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}

function showthis4(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item3_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}

function showthis5(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item4_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}

function showthis6(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item23_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}

function showthis7(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item24_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}

function showthis8(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item43_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}

function showthis9(obj) {
   if(!obj) return false;
   if(document.getElementById) {
      document.getElementById("item44_1").style.display = "none";
      document.getElementById(obj).style.display = "block";
   } else {
      return false;
   }
}