function show(st){
id="sbm";
if(st=="s"){
s1="visible"
s2="show"
}else{
s1="hidden"
s2="hide"
}
if (document.getElementById){
eval("document.getElementById(id).style.visibility = s1");
}else{
if (document.layers){
document.layers[id].visibility = s2;
}else{
if (document.all){
eval("document.all." + id + ".style.visibility = s1");
}
}
}
}