Can't view a pdf in safari

Question:I can not view a pdf in safari and I used to be able to. I can view pdfs in preview but i often click on pdf links and it takes me to a blank page. I have looked into it and I found that adobe acorbat is the recomended viewer for safari. I have tried to find out if i have still got it and I have found a few acrobat plug-ins. Does anybody know how to fix this problem?

Solution:
Quit Safari. In the Finder, select Go ▹ Go to Folder... from the menu bar, or press the key combination shift-command-G. Copy the line of text below into the box that opens, and pressreturn:
/Library/Internet Plug-ins

From the folder that opens, remove any items that have the letters “PDF” in the name. You may be prompted for your login password. Then launch Safari and test.
If you still have the issue, repeat with this line:
~/Library/Internet Plug-ins

If you don’t like the results of this procedure, restore the items from the backup you made before you started. Relaunch Safari again.

This also help me, thanks for Linc Davis's answer.