y = 0;
ad = new Array(y);
 ad[y++] = "<IMG SRC=\"http://www.washingtonwine-country.com/i/pp/top_p2.jpg\" border=0\"><br>"
ad[y++] = "<IMG SRC=\"http://www.washingtonwine-country.com/i/pp/top_p22.jpg\" border=0\"><br>"
ad[y++] = "<IMG SRC=\"http://www.washingtonwine-country.com/i/pp/top_p23.jpg\" border=0\"><br>"
ad[y++] = "<IMG SRC=\"http://www.washingtonwine-country.com/i/pp/top_p24.jpg\" border=0\"><br>"
//Continue if more required
x = Math.floor(Math.random()*(y));
document.write(ad[x]);
// -->