简单问题!如何关闭指定窗口?

打开
window.open('../load.htm','subWindow','');
关闭
window.close('subWindow');但是无效,请指点!

打开
javascript:var win = window.open('../load.htm','subWindow','');关闭
win.close()
无效
<html>
<body>
<script>
var oW = window.open('http://www.csdn.net',null,'');
window["w1"] = oW;
</script>
<input type=button onclick="window['w1'].close();">
</body>
</html>
直接这样就可以了：
<html>
<body>
<script>
var oW = window.open('http://www.csdn.net',null,'');
</script>
<input type=button onclick="oW.close();">
</body>
</html>