var max = 0;
var timer = null; 
var nowSlide = 0;

$(document).ready(function(){ 
	max = $("#total").val();
	changeSlide(1);
});


function changeSlide(i){
	
	if(timer != null) clearTimeout(timer);
	var before = i - 1;
	if(before<1) before=max;
	$("#slide_"+before).hide();
	nowSlide = i;
	$("#slide_"+i).fadeIn(300);
	i = i + 1;
	if(i>max) i = 1;
	
	timer = setTimeout( 
		function(){		
			changeSlide(i);
		}, 5000 
	);
}


function selectSlide(i){
	if(timer != null) clearTimeout(timer);
	var before = nowSlide;
	$("#slide_"+before).hide();
	nowSlide = i;
	$("#slide_"+i).fadeIn(300);
	i = i + 1;
	if(i>max) i = 1;
	
	timer = setTimeout( 
		function(){		
			changeSlide(i);
		}, 5000 
	);
}