Disabling parent page when child page is loaded
<p>I have to disable our parent page(Complete gray out and non functioning) when child page is loaded. Once I close child page then I could perform any action at my parent page. </p>

<p>I can not use Div at my parent page because it may be many page so i have to controlled it from child page only. </p>

<p>Please help me at this issue and suggest me some link or code snippet.</p>
