text = new Array(1);

text[0] = "<a target='_blank' rel='nofollow' class='mainlevel-nav' href = 'http://www.lynxtrack.com/afclick.php?o=8400&b=6201rgt0&p=31435&l=1&s=freedellxps'>Free Laptop</a>";

index = Math.floor(Math.random() * text.length);
document.write(text[index]);