To uninstall the toolbar, follow the steps presented below. If you still have issues after following the instructions, try installing AdwCleaner and remove the toolbar with the help of that program.
Google Chrome and other Chromium-based browsers: type chrome://extensions in the address bar. Press the thrash can icon next to the intended toolbar.
Firefox: press Shift+Ctrl+A (or open Tools → Add-ons). Press Disable next to the intended toolbar. If you can't find the toolbar in the Extensions tab, switch to the Plugins tab and look there.
Opera 12.x and older: press Ctrl+Shift+E (or press the Opera button → Extensions → Manage extensions) to open the Extensions menu. Press Uninstall next to the intended toolbar.
Internet Explorer: open Tools → Manage Add-ons. Select the intended toolbar and press Disable.