Selecting one item and manipulating muliple items.

Selecting one item and manipulating muliple items.

Ok, I am missing something here but this is what I want to do.  I want to select a checkbox as such
$('chkRequired');
 
Easy enough.  But I want to then use $(this).attr('checked','true');  and then $(this).show(); and then $(this).next().show();
 
How can I formulate that into something like:
 
$('chkRequired') ???? {
      $(this).attr('checked','true');
      $(this).show();
      $(this).next().show();
      };
 
Thanks,
Cory