<label><inputtype="radio"name="mode"value="blacklist"id="mode-blacklist"><spanclass="h">Black-list mode</span>: Apply the custom user-agent string to all tabs except the tabs with the following top-level hostnames (comma-separated list of hostnames)</label>
<label><inputtype="radio"name="mode"value="whitelist"id="mode-whitelist"><spanclass="h">White-list mode</span>: Only apply the custom user-agent string to the tabs with following top-level hostnames</label>
<label><inputtype="radio"name="mode"value="custom"id="mode-custom"><spanclass="h">Custom mode</span>: Try to resolve the user-agent string from a JSON object; otherwise either use the default user-agent string or use the one that user is set from the popup. Use "*" as the hostname to match all domains. You can randomly select from multiple user-agent strings by providing an array instead of a string.</label><ahref="#"id="sample">Insert</a> a sample JSON object.