//10:7=600:420
var url=new Array(9)     // ←←←忘れるな！！

url[33]="special_topics/20070829_01.html"
url[34]="special_topics/20070901_01.html"
url[35]="special_topics/20070906_01.html"
url[36]="special_topics/20070906_02.html"
url[37]="special_topics/20070912_03.html"
url[38]="special_topics/20070912_02.html"
url[39]="special_topics/20071105_01.html"
url[40]="special_topics/20071105_02.html"
url[41]="special_topics/20071105_03.html"

step_01=Math.floor(Math.random(0)*9+33)// ←←←忘れるな！！(写真の数）+（上のurl[最小数字]）にすること
step_02=url[step_01]

function default_set(){
document.write("<iframe src='");
document.write(step_02);
document.write("' name='ontheindex' frameborder='0' target='_blank' title='box' width='600' height='470' scrolling='no'></iframe>");
}
///////////iframeの大きさは570x430（3：2）
///////////
function ahref(){
document.write("<a href='");
document.write(step_02);
document.write("' target='ontheindex' style='text-decoration: none'><font color='#C80E4C'>Featuring</font></a>");
}