Hi Jonathan,

There is a way you can do this when you create the forms by modifying the form markup. If you open the XForms editor on the appropriate form and press [ctrl][shift][c], the HTML of the form will be copied to your clipboard (though this may only work on older versions of IE). You can then modify the code in a text editor, copy it back to the clipboard then go back in to the XForms editor and press [ctrl][shift][v] to paste the code back in.

Alternatively, if you're after a way to do this programmatically when the form is rendered, you'll need to tie in to the XFormControl.ControlsCreated event in your global.asax. In your event handler you can access the controls that make up the XForm and, as I recall, the opening table tag is included in a LiteralControl so you can modify its contents something like this:

private void XFormControlsCreated(object sender, EventArgs e)
{
    XFormControl formControl = (XFormControl)sender;
    ControlCollection controls = formControl.Controls;
    foreach (var control in controls)
    {
        var literalControl = control as LiteralControl;
        if (literalControl != null)
        {
            literalControl.Text = literalControl.Text.Replace("id=\"id_matrix\"", "id=\"id_matrix\" class=\"mytable\"");
        }
    }
}

Just as an advanced warning, I don't have an instance of a V6 site running to test this so I can't guarantee it works as-is but hopefully it should give you a good start.

Hi, Your second option works a treat - thank you so much,

Jon