Please check whether the following settings have been made in browser
Enable javascript:
How to enable JavaScript?
Netscape
  • Go to "Edit | Preferences..." from the main menu
  • Select "Advanced" panel
  • Check "Enable JavaScript" check box
  • Click "OK"
Internet Explorer
  • Go to "Tools | Internet Options..." from the main menu
  • Change to the "Security" tab
  • Click on the "Custom Level..." button
  • Click on "Enable" radio button under "Active scripting"
  • Click "OK"
Enable cookies:
How to enable Cookies?
Netscape
  • Select "Preferences" from the Edit menu.
  • Click on the arrow next to "Privacy & Security" in the scrolling window to expand.
  • Under "Privacy & Security", select "Cookies."
  • Select "Enable all cookies".
  • Click "OK".
Internet Explorer
  • Select "Internet Options" from the Tools menu.
  • Click on the "Privacy" tab.
  • Click the "Default" button (or manually slide the bar down to "Medium").
  • Click "OK".
Click to continue