/*
========== ::: 画像のマウスオーバー ::: ==========
*/

function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_link."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_link.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_link."));
				}
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", smartRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", smartRollover);
}


/*
========== ::: スムーズスクロール ::: ==========
*/

// Easingの追加
jQuery.easing.quart = function (x, t, b, c, d) {
	return -c * ((t=t/d-1)*t*t*t - 1) + b;
};

jQuery(document).ready(function(){
	//
	// <a href="#***">の場合、スクロール処理を追加
	//
	jQuery('a[href*=#]').click(function() {
		if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
			var $target = jQuery(this.hash);
			$target = $target.length && $target || jQuery('[name=' + this.hash.slice(1) +']');
			if ($target.length) {
				var targetOffset = $target.offset().top;
				jQuery('html,body').animate({ scrollTop: targetOffset }, 1200, 'quart');
				return false;
			}
		}
	});

});

//pagetop
$(document).ready(function() {
	var pagetop = $('.pagetop');
	$(window).scroll(function () {
		if ($(this).scrollTop() > 400) {
			pagetop.fadeIn();
		} else {
			pagetop.fadeOut();
		}
	});
	pagetop.click(function () {
		$('body, html').animate({ scrollTop: 0 }, 400);
		return false;
	});
});