var pics = Math.floor(Math.random()*8+1);
//stylesheet
if (pics < 10){
document.write('<img src="http://www.e-ikeda.jp/ski/images/top0'+pics+'.jpg" alt="キッズパラダイス" width="600" border="0" />');
}else{
document.write('<img src="http://www.e-ikeda.jp/poster/top'+pics+'.jpg" alt="キッズパラダイス" width="600" border="0" />');
}