Function to echo a posts image urls

gistfile1.php

<?php function display_images_in_list($size = thumbnail) {
	
	if($images = get_posts(array(
	'post_parent'    => get_the_ID(),
	'post_type'      => 'attachment',
	'numberposts'    => -1, // show all
	'post_status'    => null,
	'post_mime_type' => 'image',
        'orderby'        => 'menu_order',
        'order'		 => 'ASC',
	))) {
		
	foreach($images as $image) {
		$attimg = wp_get_attachment_url($image->ID);
			echo $attimg;
		}
	}
	
} ?>