August 31, 2007
CSS is traditionally used to create rollover effects with two or more images for menus and other elements. Menus can use on, off, or visited images to signify the state of the menu. Typically menus are created using multiple background images, however. The problem with this method is that it doubles the necessary HTTP requests and can cause flickering problems when the "off" image is not preloaded. A better way is to combine the on and off state images into one mini-sprite and switch the background position on rollover (see Figure 1).
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August 21, 2007
Reversing a previous trend, the US moved up from 25th to 24th in broadband penetration worldwide in the first quarter of 2007 (see Figure 1). At the high end of the broadband spectrum, South Korea retains its lead over Hong Kong, Monaco, and Iceland in household broadband penetration. At current growth rates however, Hong Kong should pass South Korea in the summer of 2007 to become the leading nation in broadband penetration. Meanwhile, broadband penetration among active Internet users grew to 83.43% in US homes in June, up 0.2 percentage points from 83.23% in June 2007.
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