change function for slideshow

hi, i have created this function for insert the images in slideshow to a specific page. But now, i need to insert the same image on all pages of the site.
this is the function:

function makeImmagineGallery()
{
	global $post;
	$results = get_children( array(
		'post_parent' => $post->ID,
		'post_status' => 'inherit',
		'post_type' => 'attachment',
		'order' => 'ASC',
		'orderby' => 'menu_order ID') );
	foreach ( $results as $image ) echo '<img src="' . $image->guid . '" alt="immagine" />' . "\r\n";
}