已经存在近十年的HTML4已经成为不断发展的Web开发领域的瓶颈；HTML5标准在此时显得尤为重要。每天都有新颖而创新的网站出现，全方位地拓展HTML的边界。Web开发者正在寻求新的技术，提供更强大的功能，那些因为脚本语言和浏览器的限制而被隐瞒了的功能。-Preview the latest technology HTML5 standard

HTML5_the_missing_manual At first glance, you might assume that HTML5 is the fifth version of the HTML web-page-writing language. But the real story is a whole lot messier. HTML5 is a rebel. It was dreamt up by a loose group of freethinkers who