Does this URL open in a simple iframe? I am asking this because this does not seem like a valid URL to me,it is missing the domain part.
I am attaching here a screenshot that shows what happens when you use an invalid URL on a simple iframe and on a RadWindow and how the behavior is the same. Here is the code used for that:
What I can suggest is building the URL dynamically by using the window.location object (https://developer.mozilla.org/en-US/docs/Web/API/Window.location). Here is a basic example that will work for same-level folders. You can extend it with more complex logic or by static variables that know your application name:
+ window.location.host + window.location.pathname.substring(0, window.location.pathname.lastIndexOf(
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