function expand(m) {    
  var d = document.getElementById(m);
    
  d.style.position = "absolute";    
  d.style.visibility = "visible";    
  d.style.display = "block"; 
}

function collapse(m) 
{    
  var d = document.getElementById(m);    
  d.style.position = "static";    
  d.style.visibility = "hidden";    
  d.style.display = "none"; 
}