I know that for me to click on this button here!
<input type="submit" id="btnSubmit" name="avancar" value=" Avancar " onclick="return onSubmit();">
I use this code
webBrowser1.OleObject.Document.all.Item('avancar', 0).click;
More when the button has no name what I do in this case here
<td><a href="javascript:void(0)" class="button-default" onclick="calcula()">Calcular</a></td>
Can anyone help me in this case?