var slide_next;
var slide_back;
var slide;

var current_slide = 0;

var advance_slide = function() {
	current_slide++;
	
	if ( current_slide == slides.length ) {
		current_slide = 0;
	}
	
	slide.fadeOut("slow", function() {
		slide.css("background-image", "url(" + template_dir + "/images/slides/slide" + slides[current_slide] + ".jpg)");	
		slide.fadeIn("slow");
	});
};

var timer_tick = function() {
	advance_slide();
};

$(document).ready(function() {
	slide = $("#image");
	slide_next = $("#next");
	slide_back = $("#back");
	
	slide_next.click(function() {
		if ( current_slide == slide_max ) {
			current_slide = 1;
		} else {
			current_slide++;	
		}
		advance_slide();
	});
	slide_back.click(function() {
		if ( current_slide == 1 ) {
			current_slide = slide_max;
		} else {
			current_slide--;	
		}
		advance_slide();
	});

	setInterval("timer_tick()", 5000);
});