how can let two windows(a window is opened by another) communicate
<p>if the title is not clear 
let me describe it again
if has a page a.html that has a javascript code below</p>

<pre><code>    window.open("http://www.baidu.com/", "_self", "");
</code></pre>

<p>and how can the original window and the new opened window  communicate??</p>

<p>thanks</p>
