title: Kendo UI window - prevent loading previous content
body: <p>I am using Kendo Window on my MVC project.
  <br/><br/>
  This is how I initiate the object from the View</p>
  
  <pre><code>@(Html.Kendo().Window()
      .Name("window")
      .Content("loading page..")
      .Iframe(true)
      .Draggable()
      .Visible(false)
      .Height(200)
      .Width(400)
      .Modal(true)
  )
  </code></pre>
  
  <p><br/><br/>
  and this is how I call the window using javaScript where _url is dynamic</p>
  
  <pre><code>$('#window')
     .data("kendoWindow")
     .title("Add new category")
     .refresh({
         url: _url
     })
     .center()
     .open();
  </code></pre>
  
  <p><br/>
  My problem is that whenever I open the window the second time it still displays the previous content until it finishes loading the current.
  <br/><br/>
  I tries to hide first the content using this:
  <br/></p>
  
  <pre><code>$('#window')
       .kendoWindow({
           visible: false
       })
       .data("kendoWindow")
       .title("Add new category")
       .refresh({
           url: _url
       })
       .center()
       .open();
  </code></pre>
  
  <p>but the object is seems being destroyed when I try to close it.</p>