function doShowHide(popupMenu) {
 if (popupMenu == "menu0") {
  document.getElementById("menu0").style.visibility="visible";
  document.getElementById("menu1").style.visibility="hidden";
  document.getElementById("menu2").style.visibility="hidden";
  document.getElementById("menu3").style.visibility="hidden";
  document.getElementById("menu4").style.visibility="hidden";
  document.getElementById("menu5").style.visibility="hidden";
}
 if (popupMenu == "menu1") {
  document.getElementById("menu0").style.visibility="hidden";
  document.getElementById("menu1").style.visibility="visible";
  document.getElementById("menu2").style.visibility="hidden";
  document.getElementById("menu3").style.visibility="hidden";
  document.getElementById("menu4").style.visibility="hidden";
  document.getElementById("menu5").style.visibility="hidden";
}
 if (popupMenu == "menu2") {
  document.getElementById("menu0").style.visibility="hidden";
  document.getElementById("menu1").style.visibility="hidden";
  document.getElementById("menu2").style.visibility="visible";
  document.getElementById("menu3").style.visibility="hidden";
  document.getElementById("menu4").style.visibility="hidden";
  document.getElementById("menu5").style.visibility="hidden";
} 
 if (popupMenu == "menu3") {
  document.getElementById("menu0").style.visibility="hidden";
  document.getElementById("menu1").style.visibility="hidden";
  document.getElementById("menu2").style.visibility="hidden";
  document.getElementById("menu3").style.visibility="visible";
  document.getElementById("menu4").style.visibility="hidden";
  document.getElementById("menu5").style.visibility="hidden";
}
 if (popupMenu == "menu4") {
  document.getElementById("menu0").style.visibility="hidden";
  document.getElementById("menu1").style.visibility="hidden";
  document.getElementById("menu2").style.visibility="hidden";
  document.getElementById("menu3").style.visibility="hidden";
  document.getElementById("menu4").style.visibility="visible";
  document.getElementById("menu5").style.visibility="hidden";
}
 if (popupMenu == "menu5") {
  document.getElementById("menu0").style.visibility="hidden";
  document.getElementById("menu1").style.visibility="hidden";
  document.getElementById("menu2").style.visibility="hidden";
  document.getElementById("menu3").style.visibility="hidden";
  document.getElementById("menu4").style.visibility="hidden";
  document.getElementById("menu5").style.visibility="visible";
}
}

function doHide(popupMenu) {
 document.getElementById(popupMenu).style.visibility="hidden";
}