ActiveTab Setting In Javascript?

Jul 23, 2010

When i am setting the tabcontainer first tab as active tab through javascript with the following code :

var tc = document.getElementById('<%= tabContainer.ClientID %>');
tc.firstChild.lastChild.style.visibility = "hidden";
tc.set_activeTabIndex(0);

i am getting the exception like:

Propert or method not supported with this object.

note that the second line succefully hides the second tab panel but the third line raises the excception.

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