var step = 1;
var delay = 30;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
var name = navigator.appName;
if(name == "Microsoft Internet Explorer") name = true;
else name = false;
var xPos = 20;
if(name) var yPos = document.body.clientHeight;
else var yPos = window.innerHeight;
function changePos() {
if(name) {
width = document.body.clientWidth;
height = document.body.clientHeight;
Hoffset = img.offsetHeight;
Woffset = img.offsetWidth;
img.style.left = xPos + document.body.scrollLeft;
img.style.top = yPos + document.body.scrollTop;
}
else {
height = window.innerHeight;
width = window.innerWidth;
Hoffset = document.img.clip.height;
Woffset = document.img.clip.width;
document.img.pageY = yPos + window.pageYOffset;
document.img.pageX = xPos + window.pageXOffset;
}
if (yon) {
yPos = yPos + step;
}
else {
yPos = yPos - step;
}
if (yPos < 0) {
yon = 1;
yPos = 0;
}
if (yPos >= (height - Hoffset)) {
yon = 0;
yPos = (height - Hoffset);
}
if (xon) {
xPos = xPos + step;
}
else {
xPos = xPos - step;
}
if (xPos < 0) {
xon = 1;
xPos = 0;
}
if (xPos >= (width - Woffset)) {
xon = 0;
xPos = (width - Woffset);
   }
}
function start() {
if(name) img.visibility = "visible";
else document.img.visibility = "visible";
interval = setInterval('changePos()',delay);
}
function pauseResume() {
if(pause) {
clearInterval(interval);
pause = false;
}
else {
interval = setInterval('changePos()',delay);
pause = true;
   }
}
start();


//----------------  这才是牛逼的菜单效果------------------//	

function attachXMenu(objid){
	var tds=objid.getElementsByTagName('td');
	for(var i=0;i<tds.length;i++){
		with(tds[i]){
			onmouseover=function(){
				with(this){
					filters[0].apply();
					style.background='#66CCFb'; //这是鼠标移上去时的背景颜色
					style.border='1px solid #ffffff'; //边框
					style.color='black'; //文字颜色
					filters[0].play();
				}
			}
			onmouseout=function(){
				with(this){
					filters[0].apply();
					style.background='#ffffff'; //这是鼠标离开时的背景颜色
					style.border='1px solid #ffffff'; //边框
					style.color='#ffffff'; //文字颜色
					filters[0].play();
				}
			}
		}
	}
}
function display(){
var menu = document.getElementById("Layer1");
    menu.style.display = "";
}