function toggle_pick(elm_id)
{
	var cpick = document.getElementById('cpick_'+elm_id);
	var opick = document.getElementById('opick_'+elm_id);
	if (cpick.className=='show_div')	{ cpick.className='hide_div'; opick.className='show_div'; }
	else if (cpick.className=='hide_div')	{ cpick.className='show_div'; opick.className='hide_div'; }
}