We've a RadEditor controls, we want disable editting in mobile render mode. How can we do it?

Here examle:

Case 1. RadEditor is LightWeight:

<telerik:RadEditor ID="redEdt" runat="server"    RenderMode="LightWeight"     Width="100%" Height="500px" ></telerik:RadEditor>

<script>
                $(document).ready(function () {
                    var editor = $telerik.findControl(document.documentElement, "redEdt");
                    editor.enableEditing(false);
                })

</script>   

--> It work great. All buttons in toolbar disabled.

Case 2. RadEditor is Mobile:

<telerik:RadEditor ID="redEdt" runat="server"    RenderMode="Mobile"     Width="100%" Height="500px" ></telerik:RadEditor>

<script>
                $(document).ready(function () {
                    var editor = $telerik.findControl(document.documentElement, "redEdt");
                    editor.enableEditing(false);
                })

</script> 

--> System error: 

M.enableContextMenus is not a function
    at c.RadEditor.enableEditing