function expand()
{document.getElementById('expander').className='expander_up';document.getElementById('expander_closed').className='expander_open';document.getElementById('expander_open').className='expander_closed';document.getElementById('poster').className='post_open';return false;}
function contract()
{document.getElementById('expander').className='expander';document.getElementById('expander_closed').className='expander_closed';document.getElementById('expander_open').className='expander_open';document.getElementById('poster').className='post_closed';return false;}