How to select all checkboxes with class "xxx"?
<p>Welcome,</p>

<p>It it possible to select all checkboxes / uncheck all checkboxes what have class "xxx" ?</p>

<p>I can't  use "name" and "ID" because there are generated dynamical via PHP and i don't know their name.</p>

<p>So maybye i can add class "xxx" for these what i wan't control ?</p>

<p>Is is possible ?</p>

<p>Or, if not possible.
Maybye i can select all / unselect  what are inside table with id "selectall" ?</p>

<p>Regards</p>
