var banners = new Array(); 
banners[0] = '<a target="_external" href="http://findmp3.pl"><img src="http://theprisonbreak.net/images/findmp3_468x60a.gif"/></a>';
banners[1] = '<a target="_external" href="http://findmp3.pl"><img src="http://theprisonbreak.net/images/findmp3_468x60a.gif"/></a>';
index = Math.floor(Math.random() * banners.length);
if (typeof banners[index] == 'object') document.write(banners[index][0] + '<span class="text">' + banners[index][1] + '</span>');
else document.write(banners[index]);