// JavaScript Document

function backToTop() {

var x1 = x2 = x3 = 0;

var y1 = y2 = y3 = 0;

if (document.documentElement) {

x1 = document.documentElement.scrollLeft || 0;

y1 = document.documentElement.scrollTop || 0;

}

if (document.body) {

x2 = document.body.scrollLeft || 0;

y2 = document.body.scrollTop || 0;

}

x3 = window.scrollX || 0;

y3 = window.scrollY || 0;

var x = Math.max(x1, Math.max(x2, x3));

var y = Math.max(y1, Math.max(y2, y3));

window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));

if (x > 0 || y > 0) {

window.setTimeout("backToTop()", 25);

}

}