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【正文】 s a relatively small and speedy download at just a couple of hundred kilobytes. You should also be aware that Microsoft 3 intends dumping most of the plugins it currently ships with Inter Explorer in future but Flash is the very notable exception. The second drawback might not concern you, but it39。t hope to imitate. Not least, Flash can include embedded audio. And perhaps best of all from an experienced designer39。ll press down to almost unfeasibly small file sizes. In practically every test, from simple rollover type and button effects to plete sequences, you39。t do anything else terribly interesting. As a result it can e across as just plain annoying or tacky. And it39。s the one animation technology supported in every Web browser that lets you see graphics at all. The limitations of animated GIFs are wellknown, but let39。s terrible. Thankfully, you still have a range of choices when it es to graphics animation. So, let39。t bad enough having to make all your static graphics 72dpi, any attempt at animation involves considerable cramming effort. What this means, at least until large screens and fast Inter connections bee the norm, is you can39。s face it, the Web is a disappointment. It39。第 1 頁 附錄一 英文原文 Animated conversation Developing decent web animations has been more like a climb up the Eiger than a walk in the park. However, the latest breed of software available has been built to capture the designer39。s imagination without killing off the muse. Alistair Dabbs goes through the motions. Let39。s that tiny little screen, the narrow bandwidth and the uncertainty that vast numbers of your audience might not be able to see what you want them to. Everything to do with Web design is about downsizing. And if it wasn39。t yet do much with video. You can stream QuickTime, but without a leased line connection it39。s take a look at the main techniques, and their drawbacks, for getting your site animated today. Back in 1994, the backroom boys in mercial Web development came up with an extremely basic form of animation by sending consecutive GIF images live to the browser. Advertisers had been using this method to change ad banners every 30 seconds or so without waiting for the user to refresh the page. By sending a sequence of frames on a constant basis, an elementary animation effect was possible. The drawback, of course, was that graphic data was constantly being downloaded over the line after the page itself had loaded. On a modem, this meant the browser was always flickering and the hard disk churning, and frames were usually interspersed with blanks as each subsequent
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