在线QQ客服代码(4)

        pos = document.documentElement.scrollTop  
          }else if (document.body) {
            pos = document.body.scrollTop;  
          }
          //http:
          pospos=pos-tips.offsetTop+theTop; 
          pos=tips.offsetTop+pos/10; 
          if (pos < theTop){
             pos = theTop;
          }
          if (pos != old) { 
             tips.style.top = pos+"px";
             tt=10;//alert(tips.style.top);  
          }
          old = pos;
          setTimeout(moveTips,tt);
}
initFloatTips();
    if(typeof(HTMLElement)!="undefined")//给firefox定义contains()方法，ie下不起作用
        {  
          HTMLElement.prototype.contains=function (obj)  
          {  
              while(obj!=null&&typeof(obj.tagName)!="undefind"){//
       　　　if(obj==this) return true;  
       　　　  　objobj=obj.parentNode;
       　　     }  
              return false;  
          }
    }
function show()
{
    document.getElementById("meumid").style.display="none"
    document.getElementById("contentid").style.display="block"
}
    function hideMsgBox(theEvent){
      if (theEvent){
        var browser=navigator.userAgent;
        if (browser.indexOf("Firefox")>0){//Firefox
            if (document.getElementById("contentid").contains(theEvent.relatedTarget)) {