$(document).ready(function() {
	$('div.chapter> div').hide(); 
		$('div.chapter> h4').click(function() {
			$(this).next('div').slideToggle('fast')
			//.siblings('div:visible').slideUp('fast');
		});
});

/*$(document).ready(function() {
$('div.demo-show2> div').hide(); 
$('div.demo-show2> h3').click(function() {
var $nextDiv = $(this).next();
var $visibleSiblings = $nextDiv.siblings('div:visible');

if ($visibleSiblings.length ) {
$visibleSiblings.slideUp('fast', function() {
$nextDiv.slideToggle('fast');
});
} else {
$nextDiv.slideToggle('fast');
}
});
});*/