// Top Images Randamizer

maxImages = 3;
imagesNo = Math.floor(Math.random() * maxImages);

document.write('<style>#navigation{background:url("images/bg_nav_'+imagesNo+'.jpg") no-repeat bottom;}</style>');

function TopImage(){
document.write('<img src="images/promotion_'+imagesNo+'.jpg" alt="" id="promotion" />');
}