Toggle Kendo Splitter on button click inside iframe

[sandeep9164262326]

my Kendo Splitter is as below.

@(Html.Kendo().Splitter()
      .HtmlAttributes(new { style = "height:590px;", id = "mainSplitter" })
      .Orientation(SplitterOrientation.Horizontal)
      .Panes(horizontalPanes =>
      {
          horizontalPanes.Add()
              .HtmlAttributes(new { id = "left-pane" })
              .Size("246px")
              .Collapsible(true)
              .Content(@<text></text>);
          horizontalPanes.Add()
              .HtmlAttributes(new { id = "right-pane", style = "overflow:hidden;" })
            .Content(@<iframe id="tabsContent_iframe" src='' data-src='' style="width:100%;height:100%;"></iframe>
            );
      })
)

I have a button outside the splitter used to toggle the left-pane which worked perfectly.
Now, if I used the same button inside my iframe and make the call. It doesn't work.
I tried doing it in couple of ways as below:

1)

 

var parentSplitterId = parent.$('#mainSplitter').data("kendoSplitter");
 var parentLeftTogglePane = parent.$('#full-pane');// , window.parent.document);
   parentSplitterId[parentLeftTogglePane.width() > 0 ? "collaspe" : "expand"](parentLeftTogglePane);

2)

 

var parentSplitterId = window.parent.document.getElementById('mainSplitter');
var parentLeftTogglePane = $('#full-pane', window.parent.document);
var splitter = $("#parentSplitterId").data("kendoSplitter");
splitter[leftTogglePane.width() > 0 ? "collaspe" : "expand"](leftTooglePane);

 

I am not able to understand where I am going wrong or what I'm missing. Please guide me out here.
Thanks​​​