function hide() {
obj = document.getElementById('testDiv');
obj.style.visibility = 'hidden';
}
function show() {
obj = document.getElementById('testDiv');
obj.style.visibility = 'visible';
obj = document.getElementById('testDiv1');
obj.style.visibility = 'hidden';
obj = document.getElementById('testDiv2');
obj.style.visibility = 'hidden';
}


function hide1() {
obj = document.getElementById('testDiv1');
obj.style.visibility = 'hidden';
}
function show1() {
obj = document.getElementById('testDiv2');
obj.style.visibility = 'hidden';
obj = document.getElementById('testDiv1');
obj.style.visibility = 'visible';
obj = document.getElementById('testDiv');
obj.style.visibility = 'hidden';
}

function hide2() {
obj = document.getElementById('testDiv2');
obj.style.visibility = 'hidden';
}
function show2() {
obj = document.getElementById('testDiv2');
obj.style.visibility = 'visible';
obj = document.getElementById('testDiv1');
obj.style.visibility = 'hidden';
obj = document.getElementById('testDiv');
obj.style.visibility = 'hidden';
}