Most of the web pages you're likely to visit will include a banner ad somewhere on the page. Many advertisers are using animated GIF's in their banners to grab surfers' attention. The problem is, as these animations continue to loop. They can become so distracting that you want nothing more than to leave the page in search of something a little less distracting. However, if you'd prefer to to remain at the site without be distracted by banner ads' flashing colors just press the 'ESC' key. When you do this, the animated GIF's will stop playing.