function move_thumbs (direction)
{
  if (direction == 'down')
  {
    if ( parseInt($('.gallery-thumbs ul').css('top').replace('px', '')) > (thumbs_height-225)*-1 )
      $('.gallery-thumbs ul').css('top', $('.gallery-thumbs ul').css('top').replace('px', '') - 75 );
  }
  else if (direction == 'up')
  {
    if ( parseInt($('.gallery-thumbs ul').css('top').replace('px', '')) < 0 )
      $('.gallery-thumbs ul').css('top', parseInt($('.gallery-thumbs ul').css('top').replace('px', '')) + 75 );
  }
}


function highlight_arrow (a, o)
{
  if (a == true)
    $(o).addClass('over');
  else
    $(o).removeClass('over');
}