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

// bannerArray

banner[number++] = "<img src='images/default_rotating/image_01.jpg' alt='pic of aerial view of um campus'/>"
banner[number++] = "<img src='images/default_rotating/image_02.jpg' alt='pic of class on grass in fall'/>"
banner[number++] = "<img src='images/default_rotating/image_03.jpg' alt='pic of um clock tower at sunset'/>"
banner[number++] = "<img src='images/default_rotating/image_04.jpg' alt='pic of sculpture front of miller hall'/>"
banner[number++] = "<img src='images/default_rotating/image_05.jpg' alt='pic of students on campus'/>"
banner[number++] = "<img src='images/default_rotating/image_06.jpg' alt='pic of students on um oval studying'/>"

// keep adding items here...

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

document.write(banner[increment]);

//-->