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Example:
1.<!--[if !IE]><!--> ³ýIEÍâ¶¼¿Éʶ±ð <!--<![endif]-->
2.<!--[if IE]> ËùÓеÄIE¿Éʶ±ð <![endif]-->
3.<!--[if IE 5.0]> Ö»ÓÐIE5.0¿ÉÒÔʶ±ð <![endif]-->
4.<!--[if IE 5]> ½öIE5.0ÓëIE5.5¿ÉÒÔʶ±ð <![endif]-->
5.<!--[if gt IE 5.0]> IE5.0ÒÔ¼°IE5.0ÒÔÉϰ汾¶¼¿ÉÒÔʶ±ð <![endif]-->
6.<!--[if IE 6]> ½öIE6¿Éʶ±ð <![endif]-->
7.<!--[if lt IE 6]> IE6ÒÔ¼°IE6ÒÔϰ汾¿Éʶ±ð <![endif]-->
8.<!--[if gte IE 6]> IE6ÒÔ¼°IE6ÒÔÉϰ汾¿Éʶ±ð <![endif]-->
9.<!--[if IE 7]> ½öIE7¿Éʶ±ð <![endif]-->
10.<!--[if lt IE 7]> IE7ÒÔ¼°IE7ÒÔϰ汾¿Éʶ±ð <![endif]-->
Explain:
1.lt£ºless than µ±Ç°Ö¸¶¨°æ±¾ÒÔÏ£¬²»°üº¬µ±Ç°°æ±¾
2.gt£ºgreater than µ±Ç°Ö¸¶¨°æ±¾ÒÔÉÏ£¬²»°üº¬µ±Ç°°æ±¾
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<div style="position:absolute; left:0; top:expression(document.body.clientHeight/2-document.body.clientHeight/4)">
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