function setAnimation(){
var imgSrcAry = new Array("images/top_kaitori.gif","images/top_rental.gif","images/top_parts.gif","images/top_tire.gif","images/partscenter_nenkan-best.gif");
var linkUrl = new Array("http://bikecenter-kaitori.jp/","http://bikecenter-rental.jp/","http://nbsj.ocnk.net/","http://bikecenter-tire.jp/","http://nbsj.ocnk.net/");
var counter = 0;
animation(imgSrcAry,linkUrl,counter);
}
function animation(SRC,HREF,NUM){
document.images["banner"].src = SRC[NUM];
document.getElementById("link").setAttribute("href",HREF[NUM]);
if(NUM < 4){NUM++;}
else{NUM = 0;}
setTimeout(function(){animation(SRC,HREF,NUM);},4000);
}