var tips; var theTop = 170/*这是默认高度,越大越往下*/; var old = theTop;
function initFloatTips() {
tips = document.getElementById('divComBox');
moveTips();
};

function moveTips() {
var tt=50;
if (window.innerHeight) {
pos = window.pageYOffset
}
else if (document.documentElement && document.documentElement.scrollTop) {
pos = document.documentElement.scrollTop
}
else if (document.body) {
pos = document.body.scrollTop;
}
pos=pos-tips.offsetTop+theTop;
pos=tips.offsetTop+pos/10;

if (pos < theTop) pos = theTop;
if (pos != old) {
tips.style.top = pos+"px";
tt=10;
}

old = pos;
setTimeout(moveTips,tt);
}

initFloatTips();
function OnlineOver(){
document.getElementById("divMenu").style.display = "none";
document.getElementById("divOnline").style.display = "block";
document.getElementById("divComBox").style.width = "157px";
}

function OnlineOut(){
document.getElementById("divMenu").style.display = "block";
document.getElementById("divOnline").style.display = "none";
}

function hideMsgBox(theEvent){ //theEvent用来传入事件，Firefox的方式
if (theEvent){
　 var browser=navigator.userAgent; //取得浏览器属性
　 if (browser.indexOf("Firefox")>0){ //如果是Firefox
　　 if (document.getElementById('divOnline').contains(theEvent.relatedTarget)) { //如果是子元素
　　 return; //结束函式
} 
} 

if (browser.indexOf("MSIE")>0){ //如果是IE
if (document.getElementById('divOnline').contains(event.toElement)) { //如果是子元素
return; //结束函式
}
}
}

/*要执行的操作*/
document.getElementById("divMenu").style.display = "block";
document.getElementById("divOnline").style.display = "none";
}