function random_imglink(){
var myimages=new Array()
myimages[1]="/js/banner1.css"
myimages[2]="/js/banner2.css"
myimages[3]="/js/banner3.css"
myimages[4]="/js/banner4.css"

var ry=Math.floor(Math.random()*myimages.length)
if (ry==0)
ry=1
document.write('<link href="'+myimages[ry]+'" rel="stylesheet" type="text/css">')
}
random_imglink()