jmp = new Array();
// ジャンプ先のアドレス(数字は画像と対応)
jmp[0] = "http://www.go-naminori.com/news/blog_m.html";
jmp[1] = "http://www.go-naminori.com/news/photo.html";
jmp[2] = "http://www.go-naminori.com/news/event.html";
jmp[3] = "http://www.go-naminori.com/news/topics.html";
n = Math.floor(Math.random()*jmp.length);
document.write("<iframe Src='"+jmp[n]+"' width='300' Height='300' scrolling='no' frameborder='0'>");
document.write("</iframe>");