Could you please give us more details about your question - do you want to find the control from client-side code or server-side code? For server-side code you could assign a code-behind class to your page and use Page.FindControl or simply reference the control in the page. For client-size if you know the ID of your control you could use either some jQuery selector or the Microsoft AJAX $find() or $get() functions.
All the best,
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items