Will this modification work fine?

[pjkcards]

Will this work?:

For the date stamp on posts:
Basically, it does the xxx ago when the post is within the same day or week, and it also shows the time if it's more than a day ago. If it's a week or more ago (or in the future) it just shows the date and time of the post.

Here is the mod. It looks like it will work, but will this affect anything else on the forum (now or in the future)?

Thanks!