$(document).ready(function(){
	var init = 1;
	var limit = 14;
	
	var photo = $("#photo_gallery #main_photo");
	var prev = $("#photo_gallery a#prev_btn");
	var next = $("#photo_gallery a#next_btn");
	
	var current = init;
	
	function showPhoto(num){
		photo.attr("src","images/tour_photos/tour"+num+".jpg");
	}
	
	
	function controlCurrent(dir) {
		if (current==init&&dir=="down") {
			current=limit;
		} else if (current == limit && dir == "up") {
			current=init;
		} else {
			(dir == "down")?(current--):(current++);
		}
		return current;
	}
		
	prev.click(
		function(){
			controlCurrent("down");	
			showPhoto(current)
			return false;
		}
	);
	next.click(
		function(){
			controlCurrent("up");
			showPhoto(current);
			return false;
		}
	);
	
});