Gray-out the background when popup opens
<p>I call below javascript on click of link/textbox or button.</p>

<pre><code>function OpenPopupLinkRisk(Number) 
{
    window.open("../PopUp.aspx?id=" + Number, "List", "scrollbars=no,resizable=yes,width=700,height=450");
    return false;
}
</code></pre>

<p>I donot want user to do anything else until he closes the popup window. So how can I grey background and force user to first close the popup and then do any other activity on application.</p>

<p>Can anyone suggest me how to achieve this ?</p>

<p>Thanks !</p>
