var tips; 
var theTop = 40/*这是默认高度,越大越往下*/;
var old = theTop;
function initFloatTips() {
tips = document.getElementById('divQQbox');
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("divQQbox").style.width = "145px";
}
function OnlineOut(){
document.getElementById("divMenu").style.display = "block";
document.getElementById("divOnline").style.display = "none";
}
function hideMsgBox(theEvent){

　 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')!=(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 = '';
document.getElementById("divOnline").style.display = "none";

}