Apart from a somewhat improved layout, the biggest benefit is that these modifications enable the Gallery details gadget to work also on log pages. Users who have the Gallery details gadget enabled in addition to this PrettyLog gadget will get the "Gallery details" sidebar link. When clicked, the Gallery details gadget will display extended information on all images listed.
Browser compatibility 
PrettyLog has been tested and is known to work on the following browsers:
Additionally, the script has been tested on the monobook, standard, cologneblue, and modern skins using Firefox 3.
Like for many other scripts at WikiMedia projects, a DOM Level 2 compatible browser is a prerequisite.
If you have any problems with PrettyLog, report them at MediaWiki talk:Gadget-PrettyLog.js.