Hello Lee,
Achieving the described behavior is theoretically possible by hooking up to non-exposed events of the Splitter's private API. However, this is not necessary if you choose to upgrade to the latest Kendo UI version, as mentioned in the related forum thread (I have just replied there as well - make sure you take a look). Let me know if you need more information.
Regards,
Dimo
the Telerik team
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