RadWindowManager in User Control Can Cause Confusion

I had a RadWindowManager in a user control that was loaded dynamically in an aspx page which also had it's own RadWindowManager.   So now there are two RadWindowManagers on the page after the user control was loaded. 

The following comes from a post at a Telerik forum:

1. the radopen() function can be used only when a RadWindowManager is declared on the page.
2. If there are multiple RadWindowManagers on the page, radopen() will use the first rendered manager. 

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