a = 3 // a=numbers of banners
var slump = Math.random();
var talet = Math.round(slump * (a-1))+1;
function create() {
this.code = ''
}
b = new Array()
for(var i=1; i<=a; i++) { b[i] = new create() }
b[1].code = '
'
b[2].code = '
'
b[3].code = '
'
var visa = "";
visa += ' '+b[talet].code+' '
document.write(' '+visa+' ');