更改标签时重定向

I am using ASP AJAX tabs. Two of the tabs need to redirect to a different URL, which I am currenty doing via javascript in the onclientclick event. I have also tried it using the HeaderTemplate and onmousedown etc, all of which works. But, there is a slight delay, and it ends up showing the contents of the tab just before the redirect.

Does anyone know a better way of doing this?