function showObject() 
{
document.getElementById('refer').style.visibility = "visible";
}
function showObject() 
{
document.getElementById('partnership').style.visibility = "visible";
}
function showObject() {
document.getElementById('shopping').style.visibility = "visible";
}
function hideObject() 
{
  document.all['refer'].style.visibility = "hidden";
}
function hideObject() 
{
  document.all['partnership'].style.visibility = "hidden";
}
function hideObject() 
{
  document.all['shopping'].style.visibility = "hidden";
}