var banner = new Array();

banner[0]='http://lh6.ggpht.com/_kILuFKqRkRw/TQPDRxZHAwI/AAAAAAAACk8/r87KE-zHVgU/2.JPG';
banner[1]='http://lh6.ggpht.com/_kILuFKqRkRw/TQPDR3g_GgI/AAAAAAAAClA/PYkOh_gv3wQ/3.JPG';
banner[2]='http://lh3.ggpht.com/_kILuFKqRkRw/TQPDRy7Yg1I/AAAAAAAAClE/LVBCcF-hNZg/11.JPG';
banner[3]='https://lh6.googleusercontent.com/_kILuFKqRkRw/TZs1HDB6ddI/AAAAAAAAESc/mxeGzsf3_UQ/12.JPG';


document.getElementById('i_logo').src= banner[Math.floor(Math.random()*banner.length)];