title: open child window in telerik radwindow
body: <p>I want to open a child RadWindow with in a telerik:RadWindow with client side script, i have used "radopen", it showing a window but not exactly with same property and url as I configured.
  One more thing my Parent RadWindow is exists in a UserControl</p>
  
  <p>this is my code:</p>
  
  <pre><code>&lt;telerik:RadWindowManager ID="RadWindowManagerCustomValue" Style="overflow: hidden"
      ShowContentDuringLoad="false" VisibleStatusbar="false" ReloadOnShow="True" IconUrl=""
      DestroyOnClose="true" Modal="true" Height="390" Width="600" runat="server" OnClientClose="closeRadWindow"
      EnableShadow="true" Title="Add/Edit Agreement Type"&gt;
      &lt;Windows&gt;
          &lt;telerik:RadWindow ID="AddCompanyDialog" ShowContentDuringLoad="false" runat="server"
              Title="Add Company" InitialBehaviors="Maximize" Behaviors="Close" NavigateUrl="somePage.aspx" /&gt;
      &lt;/Windows&gt;
  &lt;/telerik:RadWindowManager&gt;
  
  
  
              function LoadCompanyPopup(sender, args) {
  
                  radopen(null, "AddCompanyDialog");
              }
  </code></pre>