I am currently using iframe to show the documents on my website. I have the iframe in one page and links to each document on the same page pointed to the iframe. When someone wants to open a document, they click the link and it shows on the same page. If they want to choose a different document, they click a different link and it replaces the previous document in the viewer. I use the following code to point the document to the viewer:
<a href="http://absincometax.com/wp-content/uploads/2012/10/Part-I.pdf" target="mainframe">Part I
Is something like this possible with GDE?