var banner = new Array();
         
        banner.push('https://img11.hostingpics.net/pics/797877oweme2.png');
        banner.push('https://img11.hostingpics.net/pics/307535oweme3.png');
        banner.push('https://nsa30.casimages.com/img/2012/09/02/120902021458278510.png');
         
        document.getElementById('i_logo').src= banner[Math.floor(Math.random()*banner.length)];