function showhide(id){
if (document.getElementById) { 
  document.getElementById('movie1').style.visibility = 'hidden';
  document.getElementById('movie2').style.visibility = 'hidden';
  document.getElementById('movie3').style.visibility = 'hidden';
  document.getElementById('movie4').style.visibility = 'hidden';
  
  document.getElementById('movie1').style.display = 'none';
  document.getElementById('movie2').style.display = 'none';
  document.getElementById('movie3').style.display = 'none';
  document.getElementById('movie4').style.display = 'none';
}
else {
if (document.layers) { 
  document.movie1.visibility = 'hidden';
  document.movie2.visibility = 'hidden';
  document.movie3.visibility = 'hidden';
  document.movie4.visibility = 'hidden';
  
  document.movie1.display = 'none';
  document.movie2.display = 'none';
  document.movie3.display = 'none';
  document.movie4.display = 'none';
}
else { 
  document.all.movie1.style.visibility = 'hidden';
  document.all.movie2.style.visibility = 'hidden';
  document.all.movie2.style.visibility = 'hidden';
  document.all.movie2.style.visibility = 'hidden';
  
  document.all.movie1.style.display = 'none';
  document.all.movie2.style.display = 'none';
  document.all.movie2.style.display = 'none';
  document.all.movie2.style.display = 'none';
}}

switch(id){
case 1:
if (document.getElementById) { // DOM3 = IE5, NS6
	document.getElementById('movie1').style.visibility = 'visible';
	document.getElementById('movie1').style.display = 'inline';
}
else {
if (document.layers) { // Netscape 4
document.movie1.visibility = 'visible';
document.movie1.display = 'inline';
}
else { // IE 4
document.all.movie1.style.visibility = 'visible';
document.all.movie1.style.display = 'inline';
}
}
break;

case 2:
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('movie1').style.visibility = 'visible';
document.getElementById('movie1').style.display = 'inline';
}
else {
if (document.layers) { // Netscape 4
document.movie1.visibility = 'visible';
document.movie1.display = 'inline';
}
else { // IE 4
document.all.movie1.style.visibility = 'visible';
document.all.movie1.style.display = 'inline';
}
}
break;


case 3:
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('movie4').style.visibility = 'visible';
document.getElementById('movie4').style.display = 'inline';
}
else {
if (document.layers) { // Netscape 4
document.movie4.visibility = 'visible';
document.movie4.display = 'inline';
}
else { // IE 4
document.all.movie4.style.visibility = 'visible';
document.all.movie4.style.display = 'inline';
}
}

break;


case 4:
if (document.getElementById) { // DOM3 = IE5, NS6
document.getElementById('movie4').style.visibility = 'visible';
document.getElementById('movie4').style.display = 'inline';
}
else {
if (document.layers) { // Netscape 4
document.movie4.visibility = 'visible';
document.movie4.display = 'inline';
}
else { // IE 4
document.all.movie4.style.visibility = 'visible';
document.all.movie4.style.display = 'inline';
}
}

break;
}}