function image() {
};
image = new image();
number = 0;
// imageArray
image[number++] = '<a href="/images/adverts/d1.jpg" rel="lightbox" class="img"><img src="/images/adverts/d1_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d2.jpg" rel="lightbox" class="img"><img src="/images/adverts/d2_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d3.jpg" rel="lightbox" class="img"><img src="/images/adverts/d3_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d4.jpg" rel="lightbox" class="img"><img src="/images/adverts/d4_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d5.jpg" rel="lightbox" class="img"><img src="/images/adverts/d5_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d6.jpg" rel="lightbox" class="img"><img src="/images/adverts/d6_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d7.jpg" rel="lightbox" class="img"><img src="/images/adverts/d7_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d8.jpg" rel="lightbox" class="img"><img src="/images/adverts/d8_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d9.jpg" rel="lightbox" class="img"><img src="/images/adverts/d9_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d10.jpg" rel="lightbox" class="img"><img src="/images/adverts/d10_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d11.jpg" rel="lightbox" class="img"><img src="/images/adverts/d11_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d12.jpg" rel="lightbox" class="img"><img src="/images/adverts/d12_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d13.jpg" rel="lightbox" class="img"><img src="/images/adverts/d13_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d14.jpg" rel="lightbox" class="img"><img src="/images/adverts/d14_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d15.jpg" rel="lightbox" class="img"><img src="/images/adverts/d15_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d16.jpg" rel="lightbox" class="img"><img src="/images/adverts/d16_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d17.jpg" rel="lightbox" class="img"><img src="/images/adverts/d17_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'
image[number++] = '<a href="/images/adverts/d18.jpg" rel="lightbox" class="img"><img src="/images/adverts/d18_tn.jpg" border="0" class="thumb" alt="Random Porsche Advert (Click thumbnail to expand)"></a>'



// keep adding items here...
increment = Math.floor(Math.random() * number);
document.write(image[increment]);