function scroll(n)
{temp=n;
document.getelementbyid('branch').scrolltop=document.getelementbyid('branch').scrolltop+temp;
if (temp==0) return;
settimeout("scroll(temp)",20);
}

function scrolltoleft(n)
{temp=n;
document.getelementbyid('branch').scrolltop=document.getelementbyid('branch').scrolltop+temp;
if (temp==0) return;
settimeout("scrolltoleft(temp)",20);
}