/*
   -----------------------------------------------------
   スムーズスクロール
   Ver. 1.0.0
   update 2009.5.17
   Copyright (C) WEB-JOZU  URL:http://www.web-jozu.com/
   -----------------------------------------------------
*/

/*
-----------------------------------------------------------
Brouser Check
-----------------------------------------------------------
*/
var _Ver = navigator.appVersion.charAt(0);
var _Ie = ( navigator.userAgent.indexOf("MSIE") != -1 );
var _Mac = ( navigator.appVersion.indexOf("Mac") != -1 );

var _Ie8 = ( navigator.appVersion.indexOf("MSIE 8") != -1 );

/* ---------- 設定領域 start ---------- */

//滑らかさ（最適範囲2〜10）
//数値が大きいほど滑らかになりますが遅くなります。
smooth = 10;

//速さ（最適範囲70〜10）
//数値が小さい程早くなります。
speed = 10;

/* ---------- 設定領域 end ---------- */


function scrlWin(){

	if(distYY >= 1 || distYY <= -1){
		if(distYY > 0){
			moveYY = Math.ceil(distYY / smooth);
		}else{
			moveYY = Math.floor(distYY / smooth);
		}
		distYY -= moveYY;
		window.scrollBy(0, -moveYY);

		clearTimeout(timerId);
		timerId = setTimeout("scrlWin()", speed);
	}
}

function smScroll(ET){

	if(document.body.scrollTop){
		winYY = document.body.scrollTop;
	}else{
		winYY = document.documentElement.scrollTop;
	}

	if(window.innerHeight){
		winHH = window.innerHeight;
	}else if(document.all && document.getElementById && (document.compatMode == 'CSS1Compat')){
		winHH = document.documentElement.clientHeight;
	}else{
		winHH = document.body.clientHeight;
	}


	linkVal = "" + ET;
	linkName = linkVal.split("#");

	targetEt = document.getElementById(linkName[1]);
	targetYY = targetEt.offsetTop;
	
	/* IE・Firefox対応 */
	if( _Ie && ET != '#Top') {
		distYY = winYY - targetYY - 420;
	} else {
		distYY = winYY - targetYY;
	}
	if( _Ie8 ){
		distYY = winYY - targetYY;
	}
	
	pageHH = document.body.scrollHeight;

	if(pageHH - targetYY < winHH){
		difVal = winHH - (pageHH - targetYY) - 15;
		distYY += difVal;
	}

	timerId = setTimeout("scrlWin()", speed);
}