function showLarge( $img, $width, $height )
{
  $width  += 20;
  $height += 20;
  
  window.open( $img, '', 'width=' + $width + ', height=' + $height );
}

function showSlipOn( img )
{
  newImg = new Image;
  newImg.src = 'images/slipon/' + img + '.jpg';
	
  document[ 'slipon' ].src = newImg.src;
}

function showDynochart( img )
{
  newImg = new Image;
  newImg.src = 'images/' + img + '.gif';
	
  document[ 'chart' ].src = newImg.src;
}