BigSpeed Popup Blocker is an ActiveX control that allows you to create your own application for intelligent pop-up blocking. The component monitors all running browser instances (Internet Explorer 5.0 and up) and quietly eliminates all unwanted pop-ups and pop-unders ads before they appear. BigSpeed Popup Blocker does not require any configuration and will start killing pop-ups right away. The key features are: exclude certain domains from the checking, play sound alerts, customize the sound alerts, suppress JavaScipt unload event handlers, block JavaScript dialog boxes, enable pop-ups by holding down the CTRL key, blocking event with the URL of the loaded page.