function showPlan( plan ) {
	plan_dom = document.getElementById( 'plan_'+plan );
	new_top = plan_dom.offsetTop * -1;
	if( plan > 'D' ) {
		new_left = -504
	} else {
		new_left = 0;
	}
	$('.plan_menus li a:not(#button_'+plan+')').stop().animate({'opacity':.4}, 'fast');
	$('#button_'+plan).stop().animate({'opacity':1}, 'fast').animate({'opacity':.8});
	$('#plans').stop().animate({'left':new_left,'top':new_top}, 'fast' );
}