How to use botton to open a specified page in another frame

How to use botton to open a specified page in another frame
This is my code.

The name of frame is P2,

Webpage is p4.html

This botton in frame P3, I want to achieve the click, frame p2 into the page p4.html

Can be run in Firefox, but not in IE and roaming



------Solution--------------------
You change the name to an ID, try it.
and then use
document.getElementById (' p2 '). src = ' p4.html ';
------Solution--------------------
Explore


function Change_src () {
parent.p2.src= ' http://www.126.com ';
}

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