var change=new Array("images/banners/banner.jpg","images/banners/banner2.jpg","images/banners/banner3.jpg","images/banners/banner4.jpg","images/banners/banner5.jpg","images/banners/banner6.jpg","images/banners/banner7.jpg","images/banners/banner8.jpg","images/banners/banner9.jpg","images/banners/banner10.jpg")


var rotate=10;


function choosePic(){

if (document.images) {
randomNum=Math.floor((Math.random()*rotate))
document.myPicture.src=change[randomNum]

  }
}