Finding controls in javascript

I'm having an issue finding an UpdatePanel inside of a Gridview inside of a Formview in Javascript. The Below Doesn't work.

 v开发者_运维问答ar UpdatePanel3 = $get('<%=FormView1.FindControl("Gridview1").FindControl("UpdatePanel3").ClientID %>');

How can I find that control??

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$get('<%=UpdatePanel3.ClientID %>');

better way

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Easiest way is going to be with jquery. Add a class to the gridview and do a $(".cssClassName")