var txt = new Array();
txt[0]="<img src='/shop/user_data/packages/default/img/top/kuma_1.gif' border='0'>";
txt[1]="<img src='/shop/user_data/packages/default/img/top/kuma_2.gif' border='0'>";
txt[2]="<img src='/shop/user_data/packages/default/img/top/kuma_3.gif' border='0'>";
txt[3]="<img src='/shop/user_data/packages/default/img/top/kuma_4.gif' border='0'>";
txt[4]="<img src='/shop/user_data/packages/default/img/top/kuma_5.gif' border='0'>";

mmax = 5; //メッセージ行数
txtno = Math.floor(Math.random() * mmax);
document.write(txt[txtno]);