浏览器兼容 : IE 5 到 IE 9
<!--[if IE]> <link href="ie.css" rel="stylesheet"> <![endif]--> <!--[if IE6]> <style type="text/css"> /* styles for IE6 goes here */ </style> <![endif]--> <!--[if lt IE7]> <style type="text/css"> /* styles for IE7 goes here */ </style> <![endif]--> <!--[if lte IE8]> <style type="text/css"> /* styles for IE8 goes here */ </style> <![endif]--> <!--[if gt IE9]> <style type="text/css"> /* styles for IE9 goes here */ </style> <![endif]--> <!--[if gte IE9]> <style type="text/css"> /* styles for IE9 goes here */ </style> <![endif]--> <!--[if !IE]> --> <style type="text/css"> /* styles goes here but should not appear in IE5-9 */ </style> <!-- <![endif]-->