Forum Moderators: open
most likely cause is either you have Javascript disabled or you have some sort of pop-up blocker with Norton Internet Security or something similar.
If the problem is Javascript disabled, then enable it by reversing the changes made to disable it (the default configuration is to have Javascript enabled, so if it is now disabled, you or someone using the PC would have had to explicitly change it). further hints at pages such as:
[lib.drake.edu...]
If you suspect the problem is a pop-up blocker, temporarily disable your firewall software and then confirm the problem is fixed. If this confirms that the problem is the firewall software, then play with the config settings of your firewall sotware.