var banner = new Array();

banner.push('http://img341.imageshack.us/img341/7402/2884301894e21ecf86eco.jpg');
banner.push('http://img522.imageshack.us/img522/2069/421138255558d0d0b724b2.jpg');
banner.push('http://img696.imageshack.us/img696/1337/43897346016b81f3f4d6b2.jpg');
banner.push('http://img23.imageshack.us/img23/9499/3802801877501675fd29b.jpg');
banner.push('http://img690.imageshack.us/img690/6571/414915856261b1df2587b.jpg');
banner.push('http://img534.imageshack.us/img534/192/4212141300e5c7525a3bb2.jpg');
banner.push('http://img402.imageshack.us/img402/9382/2998543269b770426b11b2.jpg');
banner.push('http://img9.imageshack.us/img9/1221/422721186438a50bb0a4b2.jpg');

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

setInterval("document.getElementById('i_logo').src= banner[Math.floor(Math.random()*banner.length)];",6000);