.float_right { position: fixed; right: 50px; top: 300px; width: 78px; height: 81px; }
* html .float_right { position: absolute; right:expression(eval(document.documentElement.scrollLeft)+2);
top:expression(eval(document.documentElement.scrollTop)+300)
}


 
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.bottom { position: fixed; bottom: 0px; top: auto; z-index: 99; background: #717171; width: 100%; height: 47px; border-top: 1px solid #fff; }
.bottom { _position: absolute; _bottom: auto; _top:expression(eval(document.documentElement.scrollTop+document.documentElement.clientHeight-this.offsetHeight-(parseInt (this.currentStyle.marginTop, 10)||0)-(parseInt(this.currentStyle.marginBottom, 10)||0)));
}