//Edit this line to list all of your background images 
var backgroundSrcs = new Array(
"http://www.newton.k12.ks.us/home/images/rotate/rotate1.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate2.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate3.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate4.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate5.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate6.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate7.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate8.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate9.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate10.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate11.jpg",
"http://www.newton.k12.ks.us/home/images/rotate/rotate12.jpg")
function pickimage() 
{ 
//This line picks an image at random from the list you entered above 
var bgimage=backgroundSrcs[(Math.round(Math.random()*(backgroundSrcs.length-1)))] 

//This line applies the background image to your masthead 
document.getElementById("header").style.background = "url('" + bgimage + "') right no-repeat #FAD700"; 
}