Explanation/Reference:
Explanation:
Pop-up Blocker features
Pop-up Blocker is turned on by default. There are restrictions on the size and position of pop-up windows, regardless of the Pop-up Blocker setting. Pop-up windows cannot be opened larger than or outside the viewable desktop area. For more information, see "Windows Restrictions" in this document.
When this functionality is enabled, automatic and background pop-up windows are blocked, but windows that are opened by a user click will still open in the usual manner. Note that sites in the Trusted Sites and Local
Intranet zones do not have their pop-up windows blocked by default, as they are considered safe. This setting can be configured in the Security tab in Internet Options.
http://technet.microsoft.com/en-us/library/cc784600(v=ws.10).aspx
hints: internal web , so i choose intranet zones.
Local Intranet Zone
By default, the Local Intranet zone contains all network connections that were established by using a Universal
Naming Convention (UNC) path, and Web sites that bypass the proxy server or have names that do not include periods (for example, http://local), as long as they are not assigned to either the Restricted Sites or Trusted Sites zone. The default security level for the Local Intranet zone is set to Medium (Internet Explorer 4) or Medium-low (Internet Explorer 5 and 6). Be aware that when you access a local area network (LAN) or an intranet share, or an intranet Web site by using an Internet Protocol (IP) address or by using a fully qualified domain name (FQDN), the share or Web site is identified as being in the Internet zone instead of in the Local intranet zone.
Trusted Sites Zone
This zone contains Web sites that you trust as safe (such as Web sites that are on your organization's intranet or that come from established companies in whom you have confidence). When you add a Web site to the Trusted Sites zone, you believe that files you download or that you run from the Web site will not damage your computer or data. By default, there are no Web sites that are assigned to the Trusted Sites zone, and the security level is set to Low.
http://support.microsoft.com/kb/174360