var banner=new Array()

banner[0]='<img src="images/banner1.jpg" width="583" height="106" />'

banner[1]='<img src="images/banner2.jpg" width="583" height="106" />'

banner[2]='<img src="images/banner3.jpg" width="583" height="106" />'


var whichbanner=Math.floor(Math.random()*(banner.length))
document.write(banner[whichbanner])