Render PDF document in browser

Assuming that my SharePoint document library is a repository of PDF files, how to implement the following?

(a) Upon clicking any PDF document link or icon in the document library, the PDF file should be rendered in browser or dialog box.

(b) Also, upon clicking any PDF document link or icon from the search results page, the PDF file should be rendered in browser or dialog box.

For this implementation, let us assume that I'm able to render PDF file in a dialog box as shown in pdfviewer.codeplex.com. Should I create a custom service application to implement the above mentioned? Or is there a better way to implement this solution across SharePoint web app or farm? Request you to respond in detail.

Thanks Arut