function showmenu(id){
if (document.getElementById){
eval("document.getElementById(id).style.visibility = 'visible'");
}else{
if (document.layers){
document.layers[id].visibility = 'show';
}else{
if (document.all){
eval("document.all." + id + ".style.visibility = 'visible'");
}
}
}
}
 
function hidemenu(id){
if (document.getElementById){
eval("document.getElementById(id).style.visibility = 'hidden'");
}else{
if (document.layers){
document.layers[id].visibility = 'hide';
}else{
if (document.all){
eval("document.all." + id + ".style.visibility = 'hidden'");
}
}
}
}