$(document).ready(function(){
	$('div.page_content div.group').click(function(){
		var group = $(this);                
		if($(this).hasClass('close')){
			group.find('div.overflow').slideDown('normal', function(){
				group.removeClass('close');
			});
		}
		else{
			group.find('div.overflow').slideUp('normal', function(){
				group.addClass('close');
			});
		}
		
	});
});