I am using the code from the following link for confirming the postback with radconfim. Some how the code sample works fine on the test page but when i integrate it in my existing page the confirmation window shows but will not execute the "PostbackButton1_Click" event from the code behine. My existing page uses Radtabstrip, Radmultipageview and also the RadAjaxManager. Any clue why it may not be working. I could not upload code from existing file as it is very big. Any help is appreciated.
 
http://demos.telerik.com/aspnet-ajax/window/examples/browserdialogboxes/defaultcs.aspx
Code
<telerik:RadWindowManager ID="RadWindowManager1" runat="server" EnableShadow="true">
</telerik:RadWindowManager>
<script type="text/javascript">
            //the following code use radconfirm to mimic the blocking of the execution thread.
            //The approach has the following limitations:
            //1. It works inly for elements that have *click* method, e.g. links and buttons
            //2. It cannot be used in if(!confirm) checks
            window.blockConfirm = function (text, mozEvent, oWidth, oHeight, callerObj, oTitle)
            {
                var ev = mozEvent ? mozEvent : window.event; //Moz support requires passing the event argument manually 
                //Cancel the event 
                ev.cancelBubble = true;
                ev.returnValue = false;
                if (ev.stopPropagation) ev.stopPropagation();
                if (ev.preventDefault) ev.preventDefault();
                //Determine who is the caller 
                var callerObj = ev.srcElement ? ev.srcElement : ev.target;
                //Call the original radconfirm and pass it all necessary parameters 
                if (callerObj)
                {
                    //Show the confirm, then when it is closing, if returned value was true, automatically call the caller's click method again. 
                    var callBackFn = function (arg)
                    {
                        if (arg)
                        {
                            callerObj["onclick"] = "";
                            if (callerObj.click) callerObj.click(); //Works fine every time in IE, but does not work for links in Moz 
                            else if (callerObj.tagName == "A") //We assume it is a link button! 
                            {
                                try
                                {
                                    eval(callerObj.href)
                                }
                                catch (e) { }
                            }
                        }
                    }
                    radconfirm(text, callBackFn, oWidth, oHeight, callerObj, oTitle);
                }
                return false;
            } 
        </script>
<asp:Button CssClass="PostbackButton" ID="PostbackButton1" runat="server" Style=""
Text="Confirm postback with radconfirm" OnClientClick="return blockConfirm('Are you sure you want to postback?', event, 330, 100,'','Custom title');"
OnClick="PostbackButton1_Click" />

