$(function(){

	var show_num = 1;
	var auto_num = 1;
	var move_obj;

	var obj_width = $('.banner').width(); //객체 가로크기
	var obj_height = $('.banner').height(); //객체 가로크기
	var obj_num = $('.banner').length; //객체갯수
	var banner_container = $('#banner_container');

	$("#banner_warp").css({"width":obj_width*show_num,"height":obj_height}); //전체틀
	banner_container.css("width",obj_width*obj_num);

	function next_banner(n){
		move_obj = obj_width*(n-1);
		banner_container.animate({left:move_obj},500);
		$("#v").val(n);//확인값
	}

	$(".banner_left").on("click",function(){
		var bnum = ((obj_num-show_num-2)*-1);
		if(bnum <= auto_num){
			auto_num = auto_num-1;
		}
		next_banner(auto_num);
	}); 

	$(".banner_right").on("click",function() { 
		if(auto_num < 1){
			auto_num = auto_num+1;
		}
		next_banner(auto_num);
	}); 


})