层可以获得焦点吗??我倒是试了下onclick
<div name=div1 onclick="this.style.display='none'">
<input type=button value="button">
<input>
askdfjalsdkf
</div>
点击层中任何一元素都会使层隐藏
<div name=div1 onclick="this.style.display='none'">
<input type=button value="button">
<input>
askdfjalsdkf
</div>
点击层中任何一元素都会使层隐藏
<body onclick="layerID.style.display='none'">