$(document).ready(function(){
	$(document).pngFix();	
	var intervalId = 0;
	intervalId = setInterval("scrollSections()", 5000); 					
});

var scrollSections = function(){
	var current_cont;
	var tweetsCount = $('.tweet').size();
	$('.tweet').each(function(){ 
		if($(this).attr('class').split(' ').slice(-1) == 'active'){
			current_cont = $(this);
		}		
	});
	
	var currentItem = current_cont.attr('id').replace('tweet', '');
	
	$('#tweet'+currentItem).removeClass('active').css('display','none');
	if(currentItem < tweetsCount){	
		var newIndex = parseInt(currentItem) + 1;			
		$('#tweet'+newIndex).addClass('active').fadeIn();
	}else{
		$('#tweet1').addClass('active').fadeIn();
	}																			
}//cierra exampleFunction