ZyXEL Communications ENC User Manual page 365

In Internet Explorer, click Tools, Internet Options and then the Security tab.
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Figure 301 Internet Options: Security
Click the Custom Level... button.
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Scroll down to Scripting.
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Under Active scripting make sure that Enable is selected (the default).
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Under Scripting of Java applets make sure that Enable is selected (the default).
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ENC User's Guide
Appendix C Pop-up Windows, JavaScript and Java Permissions
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