g = 5 // a=numbers of banners
var slump = Math.random();
var talet_1 = Math.round(slump * (g-1))+1;
function create() {

this.src = ''
this.href = ''
this.alt = ''
this.under = ''
}

h = new Array()
for(var i=1; i<=g; i++) { h[i] = new create() }

h[1].src = "image/1.jpg"
h[1].href = "#"
h[1].alt = ""
h[2].src = "image/1.jpg"
h[2].href = "#"
h[2].alt = ""
h[3].src = "image/1.jpg"
h[3].href = "#"
h[3].alt = ""
h[4].src = "image/1.jpg"
h[4].href = "#"
h[4].alt = ""
h[5].src = "image/1.jpg"
h[5].href = "#"
h[5].alt = ""
<!--h[2].src = "images/ad_olympic.gif"
<!--h[2].href = "http://www.lenovo2008.com/digital/u_disk/"
<!--h[2].alt = ""-->