// Dropdown menu code
function showmenu(elmnt)
{
document.getElementById(elmnt).style.visibility="visible";
}
function hidemenu(elmnt)
{
document.getElementById(elmnt).style.visibility="hidden";
}
// Play sound code
function playSound(soundfile) 
{
document.getElementById("sound").innerHTML=
"<embed src=\""+soundfile+"\" hidden=\"true\" autostart=\"true\" loop=\"false\" />";
}