// JavaScript Document
function banner() {
};

banner = new banner();
n = 0;

// imageArray
banner[n++] = "<img src='images/b1.gif' border='0'>"
banner[n++] = "<img src='images/b2.gif' border='0'>"



// keep adding items here...

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

document.write(banner[increment]);