//<![CDATA[ 
function part1(A){
var a = document.getElementById(A);
a.style.display = (a.style.display == 'none') ? 'block' : 'none';
if (a.style.display == 'block'){
document.getElementById('list2').style.display = 'none';
document.getElementById('list3').style.display = 'none';
document.getElementById('list4').style.display = 'none';
document.getElementById('list5').style.display = 'none';
document.getElementById('list6').style.display = 'none';
}
}
function part2(B){
var b = document.getElementById(B);
b.style.display = (b.style.display == 'none') ? 'block' : 'none';
if (b.style.display == 'block'){
document.getElementById('list1').style.display = 'none';
document.getElementById('list3').style.display = 'none';
}
}
function part3(C){
var c = document.getElementById(C);
c.style.display = (c.style.display == 'none') ? 'block' : 'none';
if (c.style.display == 'block'){
document.getElementById('list1').style.display = 'none';
document.getElementById('list2').style.display = 'none';
}
}
//]]>