communication between page
<p>I have a page (<code>Page A</code>) where user can send email to others, then user should can choose the recipients.</p>

<p>So when user click the "Choose contact" button in <code>Page A</code>, a new browser page (<code>Page B</code>) will open where all their contacts in the database will be displayed using the check box list.</p>

<p>Then the user can choose the contacts he want, when he click "OK" button in <code>Page B</code>,the <code>Page A</code> will close. Then how should I get, in <code>Page A</code>, the contacts the user chosen over at <code>Page B</code>?</p>
