Installation:

Upload the printsearchresults folder to your addon directory.

For versions prior to 2.1 change line 307 of search.inc.php to 

elseif ($v && $k != 'cur_page' && $k != 'action' && $k != 'PHPSESSID' && $k != 'sortby' && $k != 'sorttype' && $k != 'printer_friendly')

Add {addon_printsearchresults_link} to your search result template where you want the printer friendly link to display. 
