<SCRIPT LANGUAGE="Javascript"><!--



function banner() {
};

banner = new banner();
number = 0;

// bannerArray
banner[number++] = "<a href='http://www.url1.com' target='_blank'><img src='images/banner-1.jpg' border='0'></a>"
banner[number++] = "<a href='http://www.url2.com' target='_blank'><img src='images/banner-2.jpg' border='0'></a>"
banner[number++] = "<a href='http://www.url3.com' target='_blank'><img src='images/banner-3.jpg' border='0'></a>"
banner[number++] = "<a href='http://www.url4.com' target='_blank'><img src='images/banner-4.jpg' border='0'></a>"
banner[number++] = "<a href='http://www.url5.com' target='_blank'><img src='images/banner-5.jpg' border='0'></a>"
// keep adding items here...

increment = Math.floor(Math.random() * number);

document.write(banner[increment]);

//--></SCRIPT>