Adding the code to the master page is not a good solution. You can create a basic simple control that will register the script only on a certain page.
HtmlGenericControl scriptControl =
It seems that you are using iframe on http://www.dyrbergkern.co.nz/scrollerTrial.aspx and inside this iframe you are calling the script which could be the problem.
All the best,
the Telerik team
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