<!--退租账单-->
<div id="bilsli" onm ouseover="showBill(this)">

#bilsli{
        position:absolute;
        right:-300px;
        top:0px;
        background:#fff;
        border:1px solid red;
        border-radius:5px;
        width:300px;

        height:auto;
        min-height:300px;
        max-height:500px;

        z-index:9103;
        overflow:auto;
    }