function openbrowser(image,title)
{
  action = window.open('showimage.php?image='+image+'&title='+escape(title),'bbviewwindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no');
}
// toggle visibility
function toggle( targetId )
{
  if (document.getElementById)
  {
  	target = document.getElementById( targetId );
		if (target.style.display == "none")
		{
 			target.style.display = "";
  	}
  	else
  	{
  		target.style.display = "none";
  	}
  }
}
function togglesubnav(targetId,nrids)
{
  for(i=1; i<=nrids; i++)
  {
    if (i != targetId)
    {
      target = document.getElementById("subnav"+i);
      if (target.style.display != "none")
      {
        target.style.display = "none";
      }
    }
  }
  toggle("subnav"+targetId);
  return false;
}