For Internet Explorer:

  1. Go to Tools menu.
  2. Click Internet Options.
  3. Click Privacy.
  4. Uncheck Turn on Pop-up Blocker.
  5. Click Apply.
  6. Click OK.

For Firefox:

  1. Go to Tools menu.
  2. Click Options (Preferences on Macs).
  3. Click Content.
  4. Uncheck Block pop-up windows.
  5. Click OK.