adimg1 = "./banner/right_simon.jpg"; //변수지정
adimg2 = "./banner/right_kyoto.jpg";
adimg3 = "./banner/right_netherland.jpg";
adimg4 = "./banner/right_palace.jpg";
adimg5 = "./banner/right_sydney.jpg";

adurl1 = "http://agbook.co.kr/?cat=11000000&no=446";
adurl2 = "http://agbook.co.kr/?cat=12000000&no=433";
adurl3 = "http://agbook.co.kr/?cat=10000000&no=438";
adurl4 = "http://agbook.co.kr/?cat=10000000&no=442";
adurl5 = "http://agbook.co.kr/?cat=13000000&no=443";

alt1 = 'simon rattle';
alt2 = '교토';
alt3 = '네델란드 디자인 여행';
alt4 = '궁궐의 안내판이 바뀐 사연';
alt5 = '시드니';

imgs = new Array("adimg1","adimg2","adimg3","adimg4","adimg5");
links = new Array("adurl1","adurl2","adurl3","adurl4","adurl5");
alts = new Array("alt1","alt2","alt3","alt4","alt5");

var rollInterval = '2500';

/* rolling */
if (window.addEventListener){
    window.addEventListener("load", rollImg, false)
} else{
    window.attachEvent("onload", rollImg)
}

function roll(rollNum){
    if (imgs){
        var obj = eval(imgs[rollNum]);
        var link = eval(links[rollNum]);
        var alt = eval(alts[rollNum]);
       
        var rollImg = document.getElementById('rollImg');
        rollImg.src = obj;
        rollImg.alt = alt;
        rollImg.onclick = function() {
            document.location.href=link;
        };
        rollImg.style.cursor = 'hand';
        var rollBtn = document.getElementById('rollBtn');
        if (rollBtn) {
            rollBtn = rollBtn.getElementsByTagName('img');
            for (var i=0; i < rollBtn.length; i++){
                if (i == rollNum) rollBtn[i].src = rollBtn[i].src.replace("off.gif", "on.gif");
                else rollBtn[i].src = rollBtn[i].src.replace("on.gif", "off.gif");
            }
        }
    }
}

var stats = false;

function rollImg(){
    if(document.getElementById('rollImg')){
        var rollImg = document.getElementById('rollImg');

		rollImg.onmouseover = function (){
            stats = true;
        }
        rollImg.onmouseout = function (){
            stats = false;
        }
        var count = 0;
        rollInterval = (rollInterval ? rollInterval : '2500');
        setInterval(function(){
            if (!stats){
                count ++;
                if (count == imgs.length){
                    count = 0;
                }
                roll(count);
            }
        }, rollInterval);
    }
}