Changing default PDF reader in Safari

Title pretty much says it all, I really liked the way you can preview pdfs in safari, right in the browser. After I installed Acrobat 9, it took over!
granted everything works the same, but it takes a little longer to load which is mildly annoying..

Any ideas how I could get back to the regular pdf preview?
Im sure Im overlooking something really obvious, but I can't find anything relating to this in the preferences and all the pdfs on my computer are set to be opened with preview.

thanks!