
function randInt(min,max)
{
     var div = (max - min) + 1
     var randNum = Math.random()
     for (var i = 0; i <= div - 1; i++)
     {
          if (randNum >= i / div && randNum < (i+1) / div)
          {return i + min}
     }
}


var abc = randInt(1,4);

if (abc == 1) {

     document.write("<img src = '/images/banner1b.jpg'>");

}

if (abc == 2) {

     document.write("<img src = '/images/banner2b.jpg'>");

}

if (abc == 3) {

     document.write("<img src = '/images/banner3.jpg'>");

}

if (abc == 4) {

     document.write("<img src = '/images/banner4b.jpg'>");

}


