If I have this function on my code:

function showHome(orientation)
{
    var appVer = Ti.UI.createWindow({
          backgroundColor: '#000',
          width: 768
    });
    appVer.open();
}

And I call it from different parts of the code, every time generate a new window? (what mean space in memory), or overwrite the same? (and not increase the memory usage).

If this create a new window every time, which it's the best practice for doing this ?

Thanks for your help!