var page = 0;
$(document).ready(function() {
	var speed = 3000;
	var timerID = setInterval('changeSlide(-1)', speed);
	$('#slideshow').append('<div id="slide_border"></div>');
	$('#slideshow').hover(function() { clearInterval(timerID); }, function() { timerID = setInterval('changeSlide(-1)', speed); });
	$('#slide_list li.t_slide').each(function(index) {
		$(this).click(function(e) {
			changeSlide(index);
		});
	});
	
	moveAirplane();
});

function changeSlide(i) {
	if($('#slide_border:animated').length != 0) return;
	
	if(i < 0) {
		i = page + 1;
		if(i >= 3) i = 0;
	} else if(page == i) {
		return;
	}
	
	var x = 0 + 145*i;
	var $active = $('#slide_area li.active');	
	var $next = $('#slide_area li.slide:eq('+i+')');
	
	$next.css({opacity: 0.0});
	$next.addClass('active');
	$active.addClass('last_active');
	$next.animate({opacity: 1.0}, 600, function() {
		$active.removeClass('active last_active');
		page = i;
	});
	$("#slide_border").animate({left: x}, 600);
}