Yes use an HTML button instead of Asp.Net button that way you can control it.

>I thought about what I said and I was wrong. Setting property CauseValidation() to false does not stop a button from posting back.
>Therefore, even if use the javascript, as you suggested, I don't seem to find a way to prevent the button from posting back. Even if I don't have a method OnClick(), the page "jumps" when I click on the button.
>
>I wonder if I am missing a way to stop the button click from posting back?