$(document).ready(function() {	
	
	// Slider
	var slider_fone = new sliderBar('.sliderFone');	
	if($('.sliderFone').length) { slider_fone.initialize(); }
});

function sliderBar(className) {	

	var largura	= $(className).width();
	var altura	= $(className).height();
	var numberSlides = $('.sliderFone_row').length;
	var num = 0;
	var tempo;
	var thisClass = this;
		
	this.initialize = function(){
		$(".sliderFone_group").width($('.sliderFone').width() * numberSlides);
		$(".sliderFone_row").width(largura);		
		thisClass.start();
	}		
	this.start = function() {
		tempo = setInterval(thisClass.nextSlide, 5000);
	}
	this.prevSlide = function() {		
		num = ((num - 1) < 0 ? numberSlides-1 : (num-1));
		$(".sliderFone_group").animate({left : -($(".sliderFone_row").width() * num)});			
	}
	this.nextSlide = function() {	
		num = ((num+1) >= numberSlides ? 0 : (num+1));
		$(".sliderFone_group").animate({left : -(num * $(".sliderFone_row").width())});
	}
}