/*  ================================================================================
 *
 *  JavaScript -Default version 3.0.3
 *  (c) 2004-2007 coliss.com
 *
 *  この作品は、クリエイティブ・コモンズの表示 2.1 日本ライセンスの下で
 *  ライセンスされています。
 *  この使用許諾条件を見るには、http://creativecommons.org/licenses/by/2.1/jp/を
 *  チェックするか、クリエイティブ･コモンズに郵便にてお問い合わせください。
 *  住所は：559 Nathan Abbott Way, Stanford, California 94305, USA です。
 *
================================================================================  */


/*  ================================================================================
TOC
============================================================
Set Adjustment
Page Scroller
============================================================
this script requires jQuery 1.2.2(http://jquery.com/)
use $ not $
================================================================================  */


/*  ================================================================================
Set Adjustment
================================================================================  */
var virtualTopId = "top",
    virtualTop,
    adjTraverser,
    adjPosition,
    callExternal = "pSc",
    delayExternal= 200;

/* example
======================================================================  */
//    virtualTop = 0;    // virtual top's left position = 0
//    virtualTop = 1;    // virtual top's left position = vertical movement
//    adjTraverser = 0;  // left position = 0
//    adjTraverser = 1;  // horizontal movement.
//    adjPosition = -26;

/*  ================================================================================
Page Scroller
================================================================================  */
( function($) {
	var height = $.fn.height, width = $.fn.width, left = $.fn.left, top = $.fn.top;
	$.fn
			.extend( {
				width : function() {
					if (!this[0])
						error();
					if (this[0] == window)
						return self.innerWidth || $.boxModel
								&& document.documentElement.clientWidth
								|| document.body.clientWidth;
					if (this[0] == document)
						return ((document.documentElement && document.compatMode == "CSS1Compat") ? document.documentElement.scrollWidth
								: document.body.scrollWidth);
					return width.apply(this, arguments)
				},
				height : function() {
					if (!this[0])
						error();
					if (this[0] == window)
						return self.innerHeight || $.boxModel
								&& document.documentElement.clientHeight
								|| document.body.clientHeight;
					if (this[0] == document)
						return ((document.documentElement && document.compatMode == "CSS1Compat") ? document.documentElement.scrollHeight
								: document.body.scrollHeight);
					return height.apply(this, arguments)
				},
				left : function() {
					if (!this[0])
						error();
					var obj = document.getElementById ? document
							.getElementById(this[0].id) : document
							.all(this[0].id);
					var tagCoords = new Object();
					tagCoords.x = obj.offsetLeft;
					while ((obj = obj.offsetParent) != null) {
						tagCoords.x += obj.offsetLeft
					}
					if ((tagCoords.x * 0) == 0)
						return (tagCoords.x);
					else
						return (this[0].id)
				},
				top : function() {
					if (!this[0])
						error();
					var obj = document.getElementById ? document
							.getElementById(this[0].id) : document
							.all(this[0].id);
					var tagCoords = new Object();
					tagCoords.y = obj.offsetTop;
					while ((obj = obj.offsetParent) != null) {
						tagCoords.y += obj.offsetTop
					}
					if ((tagCoords.y * 0) == 0)
						return (tagCoords.y);
					else
						return (this[0].id)
				}
			})
})(jQuery);
$( function() {
	$('.pagetop').click(
			function() {
				var usrUrl = location.hostname + location.pathname;
				var anchorPath = ((this.href).substring(0,
						(((this.href).length) - ((this.hash).length))))
						.slice((this.href).indexOf("//") + 2);
				if (usrUrl.lastIndexOf("?") != -1)
					usrUrlOmitQ = usrUrl.slice(0, (usrUrl.lastIndexOf("?")));
				else
					usrUrlOmitQ = usrUrl;
				if (anchorPath.lastIndexOf("?") != -1)
					anchorPathOmitQ = anchorPath.slice(0, (anchorPath
							.lastIndexOf("?")));
				else
					anchorPathOmitQ = anchorPath;
				if (anchorPathOmitQ == usrUrlOmitQ) {
					coliss.toAnchor((this.hash).substr(1));
					return false
				}
			});
	$("body").click( function() {
		coliss.stopScroll()
	})
});
this.pageScrollTimer = null;
var coliss = {
	getScrollRange : function(type) {
		if (type == "x")
			return (($(document).width()) - ($(window).width()));
		else if (type == "y")
			return (($(document).height()) - ($(window).height()))
	},
	getWindowOffset : function(type) {
		if (type == "x")
			return (window.pageXOffset || document.body.scrollLeft || document.body.parentNode.scrollLeft);
		else if (type == "y")
			return (window.pageYOffset || document.body.scrollTop || document.body.parentNode.scrollTop)
	},
	pageScroll : function(toX, toY, frms, frX, frY) {
		var pageScrollTimer;
		if (pageScrollTimer)
			clearTimeout(pageScrollTimer);
		var spd = 16;
		var actX = coliss.getWindowOffset('x');
		var actY = coliss.getWindowOffset('y');
		if (!toX || toX < 0)
			toX = 0;
		if (!toY || toY < 0)
			toY = 0;
		if (!frms)
			frms = $.browser.mozilla ? 7 : $.browser.opera ? 5 : 6;
		if (!frX)
			frX = 0 + actX;
		if (!frY)
			frY = 0 + actY;
		frX += (toX - actX) / frms;
		if (frX < 0)
			frX = 0;
		frY += (toY - actY) / frms;
		if (frY < 0)
			frY = 0;
		var posX = Math.ceil(frX);
		var posY = Math.ceil(frY);
		window.scrollTo(posX, posY);
		if ((Math.floor(Math.abs(actX - toX)) < 1)
				&& (Math.floor(Math.abs(actY - toY)) < 1)) {
			clearTimeout(this.pageScrollTimer);
			window.scroll(toX, toY)
		} else if ((posX != toX) || (posY != toY)) {
			this.pageScrollTimer = setTimeout("coliss.pageScroll(" + toX + ","
					+ toY + "," + frms + "," + frX + "," + frY + ")", spd);
		}else
			clearTimeout(this.pageScrollTimer)
	},
	stopScroll : function() {
		clearTimeout(this.pageScrollTimer)
	},
	cancelScroll : function(e) {
		coliss.stopScroll()
	},
	toAnchor : function(idName) {
		coliss.stopScroll();
		var anchorX, anchorY;
		if (!!idName) {
			if (idName == virtualTopId) {
				anchorX = (virtualTop == 0) ? 0
						: (virtualTop == 1) ? window.pageXOffset
								|| document.body.scrollLeft
								|| document.body.parentNode.scrollLeft : $(
								'#' + idName).left();
				anchorY = ((virtualTop == 0) || (virtualTop == 1)) ? 0 : $(
						'#' + idName).top()
			} else {
				anchorX = (adjTraverser == 0) ? 0
						: (adjTraverser == 1) ? ($('#' + idName).left())
								: window.pageXOffset
										|| document.body.scrollLeft
										|| document.body.parentNode.scrollLeft;
				anchorY = adjPosition ? ($('#' + idName).top()) + adjPosition
						: ($('#' + idName).top())
			}
			var dMaxX = coliss.getScrollRange('x');
			var dMaxY = coliss.getScrollRange('y');
			if (((anchorX * 0) == 0) || ((anchorY * 0) == 0)) {
				var setX = (anchorX < 1) ? 0 : (anchorX > dMaxX) ? dMaxX
						: anchorX;
				var setY = (anchorY < 1) ? 0 : (anchorY > dMaxY) ? dMaxY
						: anchorY;
				coliss.pageScroll(setX, setY)
			} else
				location.hash = idName
		} else
			coliss.pageScroll(0, 0)
	},
	initPageScroller : function() {
		var usrUrl = location.href;
		var checkAnchor = usrUrl.indexOf("#", 0);
		var checkPageScroller = usrUrl.match(callExternal);
		if (!!checkPageScroller) {
			anchorId = usrUrl.slice(usrUrl.lastIndexOf("?" + callExternal) + 4,
					usrUrl.length);
			timerID = setTimeout("coliss.toAnchor(anchorId)", delayExternal)
		}
		if (!checkAnchor)
			window.scroll(0, 0);
		else
			return true
	}
};
$(coliss.initPageScroller);