$(document).ready(function() {
$('div.drawersNav> div.sectionGroup').hide();  
$('div.drawersNav> div.sectionGroupOn').show();  
$('div.drawersNav> div.sub_nav').click(function() {
	$(this).next('div.sectionGroup').slideToggle('fast')
	.siblings('div.sectionGroup:visible').slideUp('fast');
	$(this).next('div.sectionGroupOn').slideToggle('fast')
	.siblings('div.sectionGroup:visible').slideUp('fast');
});
});