jmp = new Array();
img = new Array();
jmp[0] = "http://www.itrust.co.jp/news/detail/index.php?ctid=476&etcid=3931";
jmp[1] = "http://market.radionikkei.jp/stock/";
jmp[2] = "http://market.radionikkei.jp/kochikabu/";
jmp[3] = "http://market.radionikkei.jp/merriman";

img[0] = "http://www.radionikkei.jp/archives/banner/1310725759.gif";
img[1] = "http://www.radionikkei.jp/archives/banner/1323914660.jpg";
img[2] = "http://www.radionikkei.jp/archives/banner/1297771312.jpg";
img[3] = "http://www.radionikkei.jp/archives/banner/1328849970.jpg";

n = Math.floor(Math.random()*jmp.length);
document.write("<a href='"+jmp[n]+"'>");
document.write("<img src='"+img[n]+"' border='0'>");
document.write("</a>");