在页面左右一个悬浮div兼容IE6 IE7 8 9 Firefox chrome
#identifier-pannel {
bottom: 345px;
margin-left: 512px;
position: fixed;
_position: absolute;
left: 50%;
width: 110px;
_top: expression(eval(document.documentElement.scrollTop || document.body.scrollTop) +eval(document.documentElement.clientHeight || document.body.clientHeight) -480 +'px');
z-index:;
}