vBulletin® Version 3.8.7

This version of forum looks hard to grab any pictures 
im trying to grab this site 

<http://forum.scanlover.com/showthread.php?t=84116>

their attachment is stored in these format 

<http://forum.scanlover.com/attachmentshow.php?attachmentid=4559600&d=1361018465>

not ending with any *.jpg

any pros can help on this ?thanks