top_position = 0;
time_delay = 400;
function mi_ns4() {
document.it.top=pageYOffset+top_position;
setTimeout("mi_ns4()",time_delay);
}
function mi_ns6() {
document.getElementById("it").style.top=pageYOffset+top_position;
setTimeout("mi_ns6()",time_delay);
}
function mi_ie() {
document.all.it.style.top=document.body.scrollTop+top_position;
setTimeout("mi_ie()",time_delay);
}
if (document.layers) mi_ns4();
if (document.styleSheets&&document.all) mi_ie();
if (document.getElementById&&!document.all) mi_ns6();
if (document.all&& !document.styleSheets) mi_ns6();