Hello Seth,
Thank you for contacting us.
Currently RadDock does not change its position when setting its x-coordinate via the function
set_left() because
set_left changes only a value in the RadDock object but does not change the x-coordinate of the corresponding html element which represents the dock object. To achieve the desired functionality I suggest you the following workaround which manipulates the html object, e.g:
$get("RadDock1").style.left = "400px";
where
RadDock1 is the id of the RadDock object.
Please, let us know if you need further assistance.
Best regards,
Sophy
the Telerik team