Opening a RadWindow from Within a RadWindow

[EpiqDev]

I am trying to open a radwindow from an already opened window. I need both of them at the same hierarchy level as well as being modal windows.
After reading http://www.telerik.com/help/aspnet-ajax/window_programmingopeningfromwithin.html I was able to open the second window using RadWindow and a javascript function. Unfortunately, the second window showed up behind the current one which was not the desired behavior. I tried several methods such as setActive() and show() methods but neither proved to be working for me. So I decided to hide the current window and open the second window while adding a callback method using add_close() event handler to unhide the hidden original window after the second window gets closed. This method is producing an "out of stack space" error. Now I have to mention that I add a callback on every radwindow close event without any problem and this was done exactly the same way so I doubt that I was incorrectly using the add_close() method. And if I take out oWnd.add_close(callback); from the javascript code, it works fine except that I cannot bring the original window back. Is there a way I can get this to work?
Here are the relevant mark up and javascript codes:

RadWindow Markup in parent.ascx, child_original.aspx, child_second.aspx files:

<telerik:RadWindowManager ID="RadWindowManager1" runat="server" Skin="Black">
</telerik:RadWindowManager>

javascript code in parent.ascx file which opens the original pop-up form:

function ID_OnClientClicked(ID) {
    var url = "/Portal/child_original.aspx";
    var strTabID = "?TabID=" + $get(OpenTab).value;
    var qryString = "&ID=" + ID;
    OpenTelerikWindow(url, strTabID, qryString, 800, 400, "Info 1", Child_Original_OnClientClose, "Info1");
}

function Child_Original_OnClientClose(oWnd, args) {
    var arg = args.get_argument();
    if (arg && arg.Rebind) {
        $find(AjaxPanel).ajaxRequest(arg.ID);
    }
    oWnd.SetUrl('about:blank');
    oWnd.remove_close(Child_Original_OnClientClose);
    oWnd.Close();
}

javascript code in original pop-up form (child_original.aspx) which opens the second pop-up form:

function Child_Original_OnClientClicked(ID) {
    var url = "/Portal/Child_second.aspx";
    var strTabID = "?TabID=" + $get(OpenTab).value;
    var qryString = "&ID=" + ID;
    OpenParentTelerikWindow(url, strTabID, qryString, 1000, 700, "Info2", Info2_OnClientClose, "Info2");
}

common javascript code being shared by all of them:

function OpenTelerikWindow(formURL, strTabID, strQueryString, width, height, title, callback, name) {
    var windowID = ResolveUrl(formURL) + strTabID + strQueryString;
    if (windowID != "") {
        var oWnd = radopen(windowID, name);
        oWnd.setSize(width, height);
        oWnd.set_modal(true);
        oWnd.set_title(title);
        oWnd.set_visibleStatusbar(false);
        oWnd.set_behaviors(Telerik.Web.UI.WindowBehaviors.Move + Telerik.Web.UI.WindowBehaviors.Close);
        if (callback != null && callback != undefined) oWnd.add_close(callback);
    }
}

function OpenParentTelerikWindow(formURL, strTabID, strQueryString, width, height, title, callback, name) {
    var windowID = ResolveUrl(formURL) + strTabID + strQueryString;
    if (windowID != "") {
        var curWnd = GetRadWindow();
        var oBrowserWnd = curWnd.BrowserWindow;
        var oWnd = oBrowserWnd.radopen(windowID, name);
        oWnd.setSize(width, height);
        oWnd.set_modal(true);
        oWnd.set_title(title);
        oWnd.set_visibleStatusbar(false);
        oWnd.set_behaviors(Telerik.Web.UI.WindowBehaviors.Move + Telerik.Web.UI.WindowBehaviors.Close);
        if (callback != null && callback != undefined) oWnd.add_close(callback);
        //oWnd.show();
        oWnd.setActive();
        curWnd.hide();
    }
}

function GetRadWindow() {
    var oWindow = null;
    if (window.radWindow) oWindow = window.radWindow;
    else if (window.frameElement.radWindow) oWindow = window.frameElement.radWindow;
    return oWindow;
}

function Info2_OnClientClose(oWnd, args) {
 // method to bring back the original child form back: to be implemented
    oWnd.SetUrl('about:blank');
    oWnd.remove_close(Info2_OnClientClose);
    oWnd.Close();
}

Call stack when "out of stack space" error occurs:

Function$_validateParams    JScript
Error$argumentType  JScript
Function$_validateParameterType JScript
Function$_validateParameter JScript
Function$_validateParams    JScript
Error$argumentType  JScript
Function$_validateParameterType JScript
Function$_validateParameter JScript
<<Repeats over 100 times... Clipped>>
Function$_validateParams    JScript
Error$argumentType  JScript
Function$_validateParameterType JScript
Function$_validateParameter JScript
Function$_validateParams    JScript
Sys$EventHandlerList$addHandler JScript
JScript anonymous function  JScript
OpenParentTelerikWindow JScript

Error occurring at:
OpenParentTelerikWindow: oWnd.add_close(callback);
JScript anonymous function: c.extend({registerControlEvents:function(e,d){c.each(d,function(f,g){e.prototype["add_"+g]=function(h){this.get_events().addHandler(g,h);
};
Sys$EventHandlerList$addHandler:         var e = Function._validateParams(arguments, [
            {name: "id", type: String},
            {name: "handler", type: Function}
        ]);
Function$_validateParams: e = Function._validateParameter(params[i], expectedParam, paramName);
Function$_validateParameter: e = Function._validateParameterType(param, expectedType, expectedInteger, expectedDomElement, mayBeNull, paramName);
Function$_validateParameterType: e = Error.argumentType(paramName, Object.getType(param), expectedType);
Error$argumentType: var e = Function._validateParams(arguments, [
        {name: "paramName", type: String, mayBeNull: true, optional: true},
        {name: "actualType", type: Type, mayBeNull: true, optional: true},
        {name: "expectedType", type: Type, mayBeNull: true, optional: true},
        {name: "message", type: String, mayBeNull: true, optional: true}
    ]);

[Georgi Tunev]

Hello EncoreDev,

I believe that this thread will be of help:
http://www.telerik.com/community/forums/aspnet-ajax/window/using-add-resize-to-subscribe-to-client-side-window-resize-events.aspx#950974


Greetings,
Georgi Tunev
the Telerik team