var isDOM = (document.getElementById ? true : false);
var isIE4 = ((document.all && !isDOM) ? true : false);
var isNS4 = (document.layers ? true : false);
var isNS = navigator.appName == "Netscape";
function getRef(id) {
	if (isDOM) return document.getElementById(id);
	if (isIE4) return document.all[id];
	if (isNS4) return document.layers[id];}
function getSty(id) {
	x = getRef(id);
	return (isNS4 ? getRef(id) : getRef(id).style);}
var scrollerHeight = 88;
var puaseBetweenImages = 3000;
var imageIdx = 0;
function moveRightBanner() {
var timeoutNextCheck;
var yBannerFrom, yBannerTo, yBOffset;
if (isNS4) {
yBannerFrom = slidebanner.top;
yBannerTo = windows.pageYOffset + 250;//440;
} else if (isDOM) {
yBannerFrom   = parseInt (slidebanner.style.top, 10);
yBannerTo     = (isNS ? window.pageYOffset : document.body.scrollTop) + 250;//440; // 困率 困摹
}
timeoutNextCheck = 500;
if (yBannerFrom != yBannerTo) {
yBOffset = Math.ceil(Math.abs(yBannerTo - yBannerFrom) / 20);
if (yBannerTo < yBannerFrom)
yBOffset = -yBOffset;
if (isNS4)
slidebanner.top += yBOffset;
else if (isDOM){
slidebanner.style.top = parseInt (slidebanner.style.top, 10) + yBOffset-10;
}
timeoutNextCheck = 10;
}
setTimeout ("moveRightBanner()", timeoutNextCheck);}
function goto_top() {window.scrollTo(0, 0);}