//var nowY = 24;
var nowSrc = "";
var i = 0;
var speed=20;
var nowY = -206;
var flg = true;
var fstFlg = true;

new Image().src = "images/camp01.jpg";
new Image().src = "images/camp02.jpg";
new Image().src = "images/camp03.jpg";
new Image().src = "images/camp04.jpg";

var uaFlg = true;

var ua = navigator.userAgent.toLowerCase();
if(ua.indexOf("msie")==-1){
    uaFlg=false;
}

var ie_speed = 10;
var ie_nowAlpha = 0;
var wecFlg = true;
var endFlg = 0;
var opacity = 100;
document.getElementById("scroll_img_02").style.filter = "alpha(opacity=" + opacity + ")";

function aaa(src,position_i,href){
    if(uaFlg){
        if(endFlg == 0){
            endFlg = 1;
            document.getElementById("scroll_menu").style.backgroundPosition  = "left " + position_i+"px ";
            setTimeout("aaa('"+src+"','"+position_i+"','"+href+"')",1);
            document.getElementById("mainlink").href = href;
        }else if(endFlg == 1){
            if(wecFlg){
                if(nowSrc==src){
                    window.location.href=href;
                    return;
                }else if(opacity <= 0){
                   wecFlg = false; 
                   document.getElementById("scroll_img_02").src = src;
                }else{
                    opacity -= ie_speed;
                    document.getElementById("scroll_img_02").style.filter = "alpha(opacity=" + opacity + ")";
                }
            }else{
                if(opacity >= 100){
                   wecFlg = true; 
                   endFlg = 2; 
                }else{
                   opacity += ie_speed;
                   document.getElementById("scroll_img_02").style.filter = "alpha(opacity=" + opacity + ")";
                }
            }
            setTimeout("aaa('"+src+"','"+position_i+"','"+href+"')",1);
        }else{
            endFlg = 0;
            nowSrc = src;
        }
    }else{
        speed = speed * 0.92;
        nowY += speed;
        if(nowSrc==src){
            window.location.href=href;
        }if(fstFlg){
            document.getElementById("scroll_img_01").src=src;
            fstFlg = false;
            setTimeout("aaa('"+src+"','"+position_i+"','"+href+"')",1);
            document.getElementById("scroll_menu").style.backgroundPosition  = "left " + position_i+"px ";
            document.getElementById("mainlink").href = href;
        }else if(nowY >= 0){
            document.getElementById("scroll_img_01").src = src;
            document.getElementById("scroll_img_02").src = src;
            document.getElementById("scroll_img").style.top = "-206px";
            nowY = -206;
            speed=20;
            nowSrc = src;
            flg = true;
            fstFlg = true;
        }else{
            document.getElementById("scroll_img").style.top = nowY+"px";
            setTimeout("aaa('"+src+"','"+position_i+"','"+href+"')",1);
        }
    }
}