function StringArray (n) {
  this.length = n;
  for (var i =1; i <= n; i++) {
    this[i] = ' '
  }
}

function randomNumber(limit){
  return Math.floor(Math.random()*limit);
}

image = new StringArray(10)
image[0] = '/images/header/rotating/image00.gif'
image[1] = '/images/header/rotating/image01.gif'
image[2] = '/images/header/rotating/image02.gif'
image[3] = '/images/header/rotating/image03.gif'
image[4] = '/images/header/rotating/image04.gif'
image[5] = '/images/header/rotating/image05.gif'
image[6] = '/images/header/rotating/image06.gif'
image[7] = '/images/header/rotating/image07.gif'
image[8] = '/images/header/rotating/image08.gif'
image[9] = '/images/header/rotating/image09.gif'

ranNumber = randomNumber(10);

document.write("<img width='194' height='131' src='" +image[ranNumber]+ "'>");