常用的IE hack

1. 针对IE6的hack

    _width: 100px;

2. 针对IE6和IE7的hack

   *width: 100px;

3. 针对IE6-10的hack

   width: 100px\9;

4. 针对IE8-10的hack

   width: 100px\0;

5. 针对IE9-10的hack

   width: 100px\9\0;