The symptoms are that you see a table of contents to the left of this pane, but it is only about one inch by one inch square and there doesn't seem to be any way to enlarge it.
You are almost certainly using Internet Explorer, version 4.x on a Macintosh. The problem is that this version doesn't work properly when accompanied by older versions of Java for the Macintosh. Here are two solutions:
Change the Java virtual machine from the Apple's to Microsoft's. Do this by choosing Preferences from the Edit menu. Choose Java from the left pane of the preferences panel and choose the Microsoft Virtual Machine from the right panel.
This fix will work pretty well, but you will occasionally get annoying messages about how a script error occurred. Just ignore these.
Download the latest version of InternetExplorer from: www.microsoft.com/mac/download.