简单的IFRAME打开理解问题

Question

<input type="button" name="Button" value="储蓄业务" onclick="window.parent.frames('bank').location.href='saving.asp'">

Answer 1

onclick="window.parent.frames('bank').location.='saving.asp'">location.=多了一个点

Answer 2

location.
在后面加上href
即
location.href

Answer 3

还是不行，ie说网页上有错误：
<input type="button" name="Button" value="储蓄业务" onclick="window.parent.frames
('bank').location.href='saving.asp'">

Answer 4

onclick="window.parent.frames
[bank].location.href='saving.asp'