Window data acess in iframe

[Fabricio]

I have the frame structure below:

<frameset rows="*" frameborder="NO" framespacing="0" border="0">
<frame src="principal.aspx" id="main">
</ frameset>

principal.aspx

<script>
var window = $ ("#window"). kendoWindow ({
         width: "50%"
         height: "50%"
         modal: true,
         visible: false,
         actions: ["Refresh", "Maximize", "Close"]
     }). date ("kendoWindow");
</ script>

<iframe SRC="URL" id="frmConteudo"> </ iframe>
<div id="window"> </ div>

Now I have the problem. I'm inside the frmConteudo and want to access the div window. I can access the div window without problems this way:

$ ("#window", frames["main"].document)

However the need to access. Date ("kendoWindow") and the same is void of the two forms below:

var frame = frames["main"].document;
$ ("#window", frame).data("kendoWindow");
$ ("#window", frame).data(frame, "kendoWindow");

Any idea?