function showworks()
{
back();
hide();
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('works').style.visibility = 'visible';
document.getElementById('rec2white').style.visibility = 'visible';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';

document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('books').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('events').style.visibility = 'hidden';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

} 
else { 
hide();
if (document.layers) { // Netscape 4 
document.works.visibility = 'visible';
document.rec2white.visibility = 'visible';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.texts.visibility = 'hidden';
document.books.visibility = 'hidden';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

document.theory.visibility = 'hidden';
document.events.visibility = 'hidden';
document.archivio.visibility = 'hidden';
document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

} 
else {
hide();
document.all.works.style.visibility = 'visible'; 
document.all.rec2white.style.visibility = 'visible'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';


document.all.texts.style.visibility = 'hidden';
document.all.books.style.visibility = 'hidden';
document.all.links_ins.style.visibility = 'hidden';
document.all.links_res.style.visibility = 'hidden';
document.all.awards.style.visibility = 'hidden';
document.all.exib.style.visibility = 'hidden';
document.all.press.style.visibility = 'hidden';
document.all.theory.style.visibility = 'hidden';
document.all.events.style.visibility = 'hidden';
document.all.archivio.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

} 
} 
} 

function showtheory() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('theory').style.visibility = 'visible';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'visible';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';


document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';

document.getElementById('events').style.visibility = 'hidden';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('books').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

} 
else { 
if (document.layers) { // Netscape 4 
document.theory.visibility = 'visible';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'visible';
document.archivio.visibility = 'hidden';
document.events.visibility = 'hidden';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.texts.visibility = 'hidden';
document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

document.books.visibility = 'hidden';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

} 
else { // IE 4 
document.all.theory.style.visibility = 'visible'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'visible'; 
document.all.archivio.style.visibility = 'hidden'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.texts.style.visibility = 'hidden'; 
document.all.events.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

document.all.books.style.visibility = 'hidden'; 
document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 


function showtexts() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('texts').style.visibility = 'visible';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'visible';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('books').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';

document.getElementById('events').style.visibility = 'hidden';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';

} 
else { 
hide();
if (document.layers) { // Netscape 4 
document.texts.visibility = 'visible';
document.theory.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'visible';
document.archivio.visibility = 'hidden';
document.events.visibility = 'hidden';
document.books.visibility = 'hidden';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

} 
else {
hide();
document.all.texts.style.visibility = 'visible'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'visible'; 
document.all.archivio.style.visibility = 'hidden'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.events.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

document.all.books.style.visibility = 'hidden'; 
document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 

function showbooks() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('books').style.visibility = 'visible';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'visible';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';


document.getElementById('events').style.visibility = 'hidden';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';

} 
else { 
hide();
if (document.layers) { // Netscape 4 
document.books.visibility = 'visible';
document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'visible';
document.archivio.visibility = 'hidden';
document.events.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';

} 
else {
hide();
document.all.books.style.visibility = 'visible'; 
document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'visible'; 
document.all.archivio.style.visibility = 'hidden'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.events.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 


function showlinks() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('links_ins').style.visibility = 'visible';
document.getElementById('links_res').style.visibility = 'visible';
document.getElementById('books').style.visibility = 'hidden';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'hidden';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';

document.getElementById('events').style.visibility = 'hidden';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

} 
else { 
hide();
if (document.layers) { // Netscape 4
document.links_ins.visibility = 'visible';
document.links_res.visibility = 'visible';
document.books.visibility = 'hidden';
document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'hidden';
document.archivio.visibility = 'hidden';
document.events.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

} 
else {
hide();
document.all.links_ins.style.visibility = 'visible'; 
document.all.links_res.style.visibility = 'visible'; 
document.all.books.style.visibility = 'hidden'; 
document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'hidden'; 
document.all.archivio.style.visibility = 'hidden';

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.events.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

} 
} 
} 

function showevents() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('events').style.visibility = 'visible';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'visible';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';

document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('books').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

} 
else { 
hide();
back();
if (document.layers) { // Netscape 4 
document.events.visibility = 'visible';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'visible';
document.archivio.visibility = 'hidden';
document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.books.visibility = 'hidden';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

} 
else {
hide();
back();
document.all.events.style.visibility = 'visible'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'visible'; 
document.all.archivio.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden';
document.all.newsscroll.style.visibility = 'hidden';

document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.books.style.visibility = 'hidden'; 
document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 


function showawards() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('awards').style.visibility = 'visible';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('books').style.visibility = 'hidden';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'visible';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';

document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

document.getElementById('events').style.visibility = 'hidden';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';

} 
else { 
hide();
if (document.layers) { // Netscape 4
document.awards.visibility = 'visible';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.books.visibility = 'hidden';
document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'visible';
document.archivio.visibility = 'hidden';
document.events.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

} 
else {
hide();
document.all.awards.style.visibility = 'visible'; 
document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.books.style.visibility = 'hidden'; 
document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'visible'; 
document.all.archivio.style.visibility = 'hidden'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.events.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden';
document.all.newsscroll.style.visibility = 'hidden';

document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 

function showexib() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('exib').style.visibility = 'visible';
document.getElementById('books').style.visibility = 'hidden';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'visible';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';


document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

document.getElementById('events').style.visibility = 'hidden';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';

} 
else { 
hide();
if (document.layers) { // Netscape 4 
document.exib.visibility = 'visible';
document.books.visibility = 'hidden';
document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'visible';
document.archivio.visibility = 'hidden';
document.events.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.press.visibility = 'hidden';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';

} 
else {
hide();
document.all.exib.style.visibility = 'visible'; 
document.all.books.style.visibility = 'hidden'; 
document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'visible'; 
document.all.archivio.style.visibility = 'hidden'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.events.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 

function showpress() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('press').style.visibility = 'visible';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('books').style.visibility = 'hidden';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'visible';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';


document.getElementById('awards').style.visibility = 'hidden';

document.getElementById('events').style.visibility = 'hidden';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';

} 
else { 
hide();
if (document.layers) { // Netscape 4 
document.press.visibility = 'visible';
document.exib.visibility = 'hidden';
document.books.visibility = 'hidden';
document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'visible';
document.archivio.visibility = 'hidden';
document.events.visibility = 'hidden';
document.awards.visibility = 'hidden';

document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';

} 
else {
hide();
document.all.press.style.visibility = 'visible'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.books.style.visibility = 'hidden'; 
document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'visible'; 
document.all.archivio.style.visibility = 'hidden'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden';
document.all.about5.style.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.events.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 

} 
} 
} 


function showabout() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('about1').style.visibility = 'visible';
document.getElementById('about2').style.visibility = 'visible';
document.getElementById('about3').style.visibility = 'visible';
document.getElementById('about4').style.visibility = 'visible';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('events').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('rec4').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'hidden';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';


document.getElementById('books').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

} 
else {
hide();
if (document.layers) { // Netscape 4 
document.about1.visibility = 'visible';
document.about2.visibility = 'visible';
document.about3.visibility = 'visible';
document.about4.visibility = 'visible';

document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.events.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.rec4.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'hidden';
document.archivio.visibility = 'hidden';
document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';


document.books.visibility = 'hidden';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

} 
else {
hide();
document.all.about1.style.visibility = 'visible'; 
document.all.about2.style.visibility = 'visible'; 
document.all.about3.style.visibility = 'visible'; 
document.all.about4.style.visibility = 'visible';
document.all.about5.style.visibility = 'hidden';

document.all.about5.visibility = 'hidden';
document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.texts.style.visibility = 'hidden';
document.all.theory.style.visibility = 'hidden';
document.all.events.style.visibility = 'hidden';
document.all.rec4.style.visibility = 'hidden';
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'hidden'; 
document.all.archivio.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden';
document.all.newsscroll.style.visibility = 'hidden';

document.all.books.style.visibility = 'hidden';
document.all.links_ins.style.visibility = 'hidden';
document.all.links_res.style.visibility = 'hidden';
document.all.awards.style.visibility = 'hidden';
document.all.exib.style.visibility = 'hidden';
document.all.press.style.visibility = 'hidden';

} 
} 
} 

function showcontact() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('about1').style.visibility = 'visible';
document.getElementById('about2').style.visibility = 'visible';
document.getElementById('about3').style.visibility = 'visible';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'visible';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('events').style.visibility = 'hidden';
document.getElementById('rec4').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'hidden';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';


document.getElementById('books').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

} 
else {
hide();
if (document.layers) { // Netscape 4 

document.about1.visibility = 'visible';
document.about2.visibility = 'visible';
document.about3.visibility = 'visible';
document.about4.visibility = 'hidden';
document.about5.visibility = 'visible';

document.about_ita.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.events.visibility = 'hidden';
document.rec4.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'hidden';
document.archivio.visibility = 'hidden';
document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

document.books.visibility = 'hidden';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

} 
else {
hide();
document.all.about1.style.visibility = 'visible'; 
document.all.about2.style.visibility = 'visible'; 
document.all.about3.style.visibility = 'visible'; 
document.all.about4.style.visibility = 'hidden'; 
document.all.about5.style.visibility = 'visible'; 

document.all.about_ita.visibility = 'hidden';
document.all.ab1prof.visibility = 'hidden';
document.all.ab2prof.visibility = 'hidden';
document.all.ab3prof.visibility = 'hidden';
document.all.abpeople.visibility = 'hidden';
document.all.abpeimg.visibility = 'hidden';

document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.events.style.visibility = 'hidden'; 
document.all.rec4.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'hidden'; 
document.all.archivio.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

document.all.books.style.visibility = 'hidden'; 
document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 


function showfirm() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('about1').style.visibility = 'visible';
document.getElementById('about2').style.visibility = 'visible';
document.getElementById('about3').style.visibility = 'visible';
document.getElementById('ab1prof').style.visibility = 'visible';
document.getElementById('ab2prof').style.visibility = 'visible';
document.getElementById('ab3prof').style.visibility = 'visible';
document.getElementById('abpeople').style.visibility = 'hidden';
document.getElementById('abpeimg').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('about_ita').style.visibility = 'hidden';

document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('events').style.visibility = 'hidden';
document.getElementById('rec4').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'hidden';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('books').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

} 
else {
hide();
if (document.layers) { // Netscape 4 
document.about1.visibility = 'visible';
document.about2.visibility = 'visible';
document.about3.visibility = 'visible';
document.ab1prof.visibility = 'visible';
document.ab2prof.visibility = 'visible';
document.ab3prof.visibility = 'visible';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';
document.abpeople.visibility = 'hidden';
document.abpeimg.visibility = 'hidden';

document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.events.visibility = 'hidden';
document.rec4.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'hidden';
document.archivio.visibility = 'hidden';
document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

document.books.visibility = 'hidden';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

} 
else {
hide();
document.all.about1.style.visibility = 'visible'; 
document.all.about2.style.visibility = 'visible'; 
document.all.about3.style.visibility = 'visible'; 
document.all.ab1prof.style.visibility = 'visible'; 
document.all.ab2prof.style.visibility = 'visible'; 
document.all.ab3prof.style.visibility = 'visible'; 
document.all.about4.style.visibility = 'hidden'; 
document.all.about5.style.visibility = 'hidden'; 
document.all.about_ita.style.visibility = 'hidden'; 
document.all.abpeople.style.visibility = 'hidden'; 
document.all.abpeimg.style.visibility = 'hidden'; 

document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.events.style.visibility = 'hidden'; 
document.all.rec4.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'hidden'; 
document.all.archivio.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

document.all.books.style.visibility = 'hidden'; 
document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 

function showpeople() { 
hide();
back();
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('abpeople').style.visibility = 'visible';
document.getElementById('abpeimg').style.visibility = 'visible';
document.getElementById('about1').style.visibility = 'hidden';
document.getElementById('about2').style.visibility = 'hidden';
document.getElementById('about3').style.visibility = 'hidden';
document.getElementById('ab1prof').style.visibility = 'hidden';
document.getElementById('ab2prof').style.visibility = 'hidden';
document.getElementById('ab3prof').style.visibility = 'hidden';
document.getElementById('about4').style.visibility = 'hidden';
document.getElementById('about5').style.visibility = 'hidden';
document.getElementById('about_ita').style.visibility = 'hidden';
document.getElementById('texts').style.visibility = 'hidden';
document.getElementById('theory').style.visibility = 'hidden';
document.getElementById('events').style.visibility = 'hidden';
document.getElementById('rec4').style.visibility = 'hidden';
document.getElementById('works').style.visibility = 'hidden';
document.getElementById('rec2white').style.visibility = 'hidden';
document.getElementById('archivio').style.visibility = 'hidden';
document.getElementById('rec2').style.visibility = 'hidden';
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';

document.getElementById('books').style.visibility = 'hidden';
document.getElementById('links_ins').style.visibility = 'hidden';
document.getElementById('links_res').style.visibility = 'hidden';
document.getElementById('awards').style.visibility = 'hidden';
document.getElementById('exib').style.visibility = 'hidden';
document.getElementById('press').style.visibility = 'hidden';

} 
else {
hide();
if (document.layers) { // Netscape 4 

document.abpeople.visibility = 'visible';
document.abpeimg.visibility = 'visible';
document.about1.visibility = 'hidden';
document.about2.visibility = 'hidden';
document.about3.visibility = 'hidden';
document.ab1prof.visibility = 'hidden';
document.ab2prof.visibility = 'hidden';
document.ab3prof.visibility = 'hidden';
document.about4.visibility = 'hidden';
document.about5.visibility = 'hidden';
document.about_ita.visibility = 'hidden';

document.texts.visibility = 'hidden';
document.theory.visibility = 'hidden';
document.events.visibility = 'hidden';
document.rec4.visibility = 'hidden';
document.works.visibility = 'hidden';
document.rec2white.visibility = 'hidden';
document.archivio.visibility = 'hidden';
document.rec2.visibility = 'hidden';
document.news.visibility = 'hidden';
document.newsscroll.visibility = 'hidden';

document.books.visibility = 'hidden';
document.links_ins.visibility = 'hidden';
document.links_res.visibility = 'hidden';
document.awards.visibility = 'hidden';
document.exib.visibility = 'hidden';
document.press.visibility = 'hidden';

} 
else {
hide();
document.all.abpeople.style.visibility = 'visible'; 
document.all.abpeimg.style.visibility = 'visible'; 

document.all.about1.style.visibility = 'hidden'; 
document.all.about2.style.visibility = 'hidden'; 
document.all.about3.style.visibility = 'hidden'; 
document.all.ab1prof.style.visibility = 'hidden'; 
document.all.ab2prof.style.visibility = 'hidden'; 
document.all.ab3prof.style.visibility = 'hidden'; 
document.all.about4.style.visibility = 'hidden'; 
document.all.about5.style.visibility = 'hidden'; 
document.all.about_ita.style.visibility = 'hidden'; 

document.all.texts.style.visibility = 'hidden'; 
document.all.theory.style.visibility = 'hidden'; 
document.all.events.style.visibility = 'hidden'; 
document.all.rec4.style.visibility = 'hidden'; 
document.all.works.style.visibility = 'hidden'; 
document.all.rec2white.style.visibility = 'hidden'; 
document.all.archivio.style.visibility = 'hidden'; 
document.all.rec2.style.visibility = 'hidden'; 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 

document.all.books.style.visibility = 'hidden'; 
document.all.links_ins.style.visibility = 'hidden'; 
document.all.links_res.style.visibility = 'hidden'; 
document.all.awards.style.visibility = 'hidden'; 
document.all.exib.style.visibility = 'hidden'; 
document.all.press.style.visibility = 'hidden'; 

} 
} 
} 



function hidearchivio() { 
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('archivio').style.visibility = 'hidden'; 
} 
else { 
if (document.layers) { // Netscape 4 
document.archivio.visibility = 'hidden'; 
} 
else { // IE 4 
document.all.archivio.style.visibility = 'hidden'; 
} 
} 
} 

function showarchivio() { 
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('archivio').style.visibility = 'visible'; 
} 
else { 
if (document.layers) { // Netscape 4 
document.archivio.visibility = 'visible'; 
} 
else { // IE 4 
document.all.archivio.style.visibility = 'visible'; 
} 
} 
} 


function hidenews() { 
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('news').style.visibility = 'hidden';
document.getElementById('newsscroll').style.visibility = 'hidden';
document.getElementById('rec4').style.visibility='visible';
} 
else { 
if (document.layers) { // Netscape 4 
document.news.visibility = 'hidden'; 
document.newsscroll.visibility = 'hidden'; 
document.rec4.visibility = 'hidden'; 
} 
else { // IE 4 
document.all.news.style.visibility = 'hidden'; 
document.all.newsscroll.style.visibility = 'hidden'; 
document.all.rec4.style.visibility = 'hidden'; 
} 
} 
} 

function shownews() {
hidew();
if (document.getElementById) { // DOM3 = IE5, NS6 
document.getElementById('news').style.visibility = 'visible';
document.getElementById('newsscroll').style.visibility = 'visible';
document.getElementById('rec4').style.visibility = 'hidden';
} 
else { 
if (document.layers) { // Netscape 4 
document.news.visibility = 'visible'; 
document.newsscroll.visibility = 'visible';
document.rec4.visibility = 'hidden';
} 
else { // IE 4 
document.all.news.style.visibility = 'visible'; 
document.all.newsscroll.style.visibility = 'visible'; 
document.all.rec4.style.visibility = 'hidden'; 
} 
} 
}