I use java applet to create a list of hrefs. These links open documents in a frame. The documents might be text, html, .doc or PDF. The links are always available to the user in the left frame.
Under IE, once a PDF href is clicked, it does display in the main frame BUT no other href can be subsquently selected. Hitting the back button again allows any other link to be selected.
Curiously, this problem is not manifest on IE machines at my office although it seems to affect the rest of the world. There is no problem under NN.
To view this problem go to : www.loopexpert.com
login in as user: laura
note: any "Product Sheet" is a PDF