1，chrome5.0
2，ie7
3，opera10.5
4,safari5.0
三，测试
序号 关闭代码 需要确认 无任何作用 无需确认 测试
1 window.close() IE7 firefox,chrome,
safari Opera Close
2 window.opener=null;
window.open('','_self');
window.close(); firefox IE7,Opera，
chrome,safari Close
3 window.open('','_self');
window.close(); firefox IE7,Opera，
chrome,safari Close
4 window.opener=null;
window.close(); IE7 firefox，safari chrome,Opera Close
5 var opened=window.open('about:blank','_self');
opened.opener=null;
opened.close(); firefox safari,IE7,
chrome,Opera Close
6 var opened=window.open('about:blank','_self');
opened.close(); safari,firefox IE7,
chrome,Opera Close