$(function() {
	//로딩효과 초기화
	resetLoadingObj();

	$(window).scroll(function() {
		scrollBanner({
			banner: $('.objScrollEffect2'),
			bannerText: $('.fm4_txt')
		});
	});
});

$(window).load(function(){
	//로딩 효과
	setLoadingEvent();
	setMaintextEffect();

	//스크롤 효과
	setScrollEffect();
});

//reset (숨기기)
function resetLoadingObj() {	
	$('.objEffect').each(function(){
		TweenMax.set($(this),{y:50,alpha:0});
	});

	$('.objScrollEffect').each(function(){
		var h = $(this).height()+100;
		TweenMax.set($(this),{y:h,alpha:0});
	});

	TweenMax.set($("#maintext"),{y:-500,alpha:0});
}

//로딩 효과
function setLoadingEvent() {	
	//순차적으로 로딩처리
	TweenMax.staggerTo($(".objEffect"),0.5,{y:0,alpha:1,ease:Quad.easeOut},0.2);
}

//스크롤 효과
function setScrollEffect() {
	$('.objScrollEffect').each(function(){
		var obj = $(this);
		var p = obj.offset();
		var top = p.top - obj.height() - 800;
		$(window).scroll(function(){
			if ($(this).scrollTop() > top) {
				TweenMax.to(obj,1,{y:0,alpha:1,ease:Quad.easeOut});				
			}
		});
	});
}

//main_text 효과
function setMaintextEffect()
{
	TweenMax.to($("#maintext"),1,{y:500,alpha:1,ease:Bounce.easeOut});
}

//스크롤 효과2
function scrollBanner(config) {
	thistop = -(config.banner.offset().top-200);
	scrollPos = $(this).scrollTop()+thistop;

	config.bannerText.css({
		'margin-top' : -(scrollPos/3) + "px",
		'opacity' : 1-(scrollPos/300)
	});

	config.banner.css({
		'background-position': 'center ' + (-scrollPos/4) + "px"
	});

}