Configuring Pop-ups
You can configure Comodo Dragon to block, allow or selectively allow pop-ups. You can see the 
icon in the top right side of the address bar of the browser whenever a pop-up for a site is blocked.
To configure pop-ups
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Click the Comodo Dragon icon
located at the top-left corner.
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Select 'Settings' from the menu >Show advanced settings link .
- Scroll down to 'Privacy' section.
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Click the 'Content settings' in the Privacy section.
- Select 'Pop-ups' from the list of features in the 'Content Settings' dialog.
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Select 'Allow all sites to show pop-ups' for all pop-ups to display.
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Select 'Do not allow any site to show pop-ups (recommended)' to block all pop-ups.
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Click the 'Manage exceptions...' button to customize your settings for allowing or blocking pop-ups.
Enter the web address of the web-page in the 'Pattern' text box.
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Select 'Allow' or 'Block' in the Action drop-down box.
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Close the dialog.
You can see the website is added to the list of pop-up exceptions. Right clicking on any website in this list opens a context menu which allows you to add or remove websites and specify other settings such as spell-checker options.
You can also view the list of pop-ups that were blocked by clicking the 
icon in the address bar.
In the list that is displayed, you can view the pop-up window by clicking on it. Select the 'Allows allow pop-ups from....' for unrestricted viewing of all pop-ups from that particular website. It will be automatically added to the exception list. Click the 'Manage pop-up blocking' link to access the 'Content Settings' dialog.