//--------------------------------comic script ver2.02 by tama

Num=1;

function next()
{
Num=Num+1
if(Num>MaxPage)Num=MaxPage;
routine();
}

function prev()
{
Num=Num-1;
if(Num<1)Num=1;
if(Num>MaxPage)Num=MaxPage;
routine();
}

function jump(PG)
{
n=eval(PG.page.value);
Num = n;
if ((n>0) && (n<=MaxPage)) {routine();}
else {alert("1から"+MaxPage+"の数字を入力して下さいね。");}
}

function seljump()
{
op=document.comic.sejump.selectedIndex;
Num=eval(document.comic.sejump.options[op].value);
routine();
}

function routine()
{
document.myImage.src=Num+".gif";
document.VIEW.src=Num+1+".gif";
document.comic.nowpage.value = Num;
}





/** 以下スクロール. */
function handle(delta) {        
	if (delta < 0)
                // 下方向にまわした場合の処理
                next();
        else                // 上方向にまわした場合の処理
                prev();}

/** Event handler for mouse wheel event
. */
function wheel(event){ 
       var delta = 0;
        if (!event) /* For IE. */
                event = window.event;
        if (event.wheelDelta) { /* IE/Opera. */
                delta = event.wheelDelta/120;
                if (window.opera)
                        delta = -delta;
        } else if (event.detail) { /** Mozilla case. */
                delta = -event.detail/3;
        }
        /** If delta is nonzero, handle it.
         * Basically, delta is now positive if wheel was scrolled up,
         * and negative, if wheel was scrolled down.
         */
        if (delta) 
               handle(delta);
}
/** Initialization code.  
* If you use your own event management code, change it as required. 
*/
if (window.addEventListener) window.addEventListener('DOMMouseScroll', wheel, false);
window.onmousewheel = document.onmousewheel = wheel;