Looks like your browser has been hijacked by malware or ad software. You may have installed recently some software which came with "toolbar" or similar addon (usually displayed in the installer as checkbox - something like "I accept the terms and will install the toolbar"). Software like that is sponsored by installation of web browser addons which may be something like the web page you mention. See if you installed such software.
You can try to remove such software, or disable addons in web browser (most likely Internet Explorer). Click gear icon to open menu and select "manage addons". Then take a look at the pages there and see if there is something to disable.
Additionally you can scan your system with anti-spyware programs like "Ad-Aware" (Lavasoft) or "Spybot search and destroy" (Safer-Networking Ltd.) which may detect this for you.