function showorhide1(f){
if(f){visi="visible";}
else{visi="hidden";}
if(document.layers){

document.live.visibility=visi;
}
if(document.all){

document.all.live.style.visibility=visi;
}
if(document.getElementById){

document.getElementById("live").style.visibility=visi;
}
} 

function showorhide2(f){
if(f){visi="visible";}
else{visi="hidden";}
if(document.layers){

document.nouafani.visibility=visi;
}
if(document.all){

document.all.nouafani.style.visibility=visi;
}
if(document.getElementById){

document.getElementById("nouafani").style.visibility=visi;
}
} 

function showorhide17(f){
if(f){visi="visible";}
else{visi="hidden";}
if(document.layers){

document.presa.visibility=visi;
}
if(document.all){

document.all.presa.style.visibility=visi;
}
if(document.getElementById){

document.getElementById("presa").style.visibility=visi;
}
}  

function showorhide9(f){
if(f){visi="visible";}
else{visi="hidden";}
if(document.layers){

document.live2.visibility=visi;
}
if(document.all){

document.all.live2.style.visibility=visi;
}
if(document.getElementById){

document.getElementById("live2").style.visibility=visi;
}
}