function b2back()
{

window.document.getElementById("b2b_").src="/b2b.php?mode=ack";

setTimeout("b2b()",1500);
}

function b2bnack()
{
window.document.getElementById("b2b_").src="/b2b.php?mode=nack";

setTimeout("back()",2500);
}
function back()
{
location.href="index.html";
}
function b2b()
{
if (window.document.getElementById("b2bz").style.display=="")
{
window.document.getElementById("b2bz").style.display="none";

window.document.getElementById("agb2").style.display="none";
}
else
{
window.document.getElementById("b2bz").style.display="";
window.document.getElementById("agb2").style.display="";
}
}