function banner() {
};
  
  banner = new banner();
number = 0;

// bannerArray

banner[number++] = "<img src='images/headers/header_tola.jpg'/>"
banner[number++] = "<img src='images/headers/header_howFarActual.jpg'/>"
banner[number++] = "<img src='images/headers/header_answersWash.jpg'/>"
banner[number++] = "<img src='images/headers/header_actualDetail.jpg'/>"
banner[number++] = "<img src='images/headers/header_actual.jpg'/>"
banner[number++] = "<img src='images/headers/header_howFar.jpg'/>"
banner[number++] = "<img src='images/headers/header_blckhistrymnth1.jpg'/>"
banner[number++] = "<img src='images/headers/header_blckhistrymnth2.jpg'/>"
banner[number++] = "<img src='images/headers/header_permanent-det.jpg'/>"


// keep adding items here...

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

document.write(banner[increment]);

//-->