Internet Explorer

• 1). Click "Tools."
  
  
• 2). Click "Pop-up Blocker" in the Internet Explorer "Tools" menu.
  
  
• 3). Choose "Turn on Pop-up Blocker" to activate Internet Explorer's built-in pop-up blocking. Now when you encounter a pop-up on a website, Internet Explorer informs you that it blocked a pop-up on the website.
  
  

Firefox

• 1). Click the "Firefox" button to open the Settings window.
  
  
• 2). Click "Options" and "Content" to get to the appropriate settings section.
  
  
• 3). Put a check in the "Block Pop-up Windows" box. Like Internet Explorer, Firefox displays a message when a pop-up is blocked on the page.