Responsive设计——meta标签

media-queries.js(http://code.google.com/p/css3-mediaqueries-js/)      

 respond.js(https://github.com/scottjehl/Respond)

 <!—[if lt IE9]>
      <scriptsrc=http://css3-mediaqueries-js.googlecode.com/svn/trunk/css3-mediaqueries.js></script>
 ​<![endif]>

<meta name=”viewport” content=”width=device-width,initial-scale=1.0” />