<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="智能社 - zhinengshe.com">
<meta name="copyright" content="智能社 - zhinengshe.com">
<title>智能社 - www.zhinengshe.com</title>
<style>
div { float:left; margin:10px; }
#div1 { width:100px; height:100px; background:red; }
#div2 { display:none; width:300px; height:300px; background:green; }
</style>
<script>
window.onload=function (){
var oDiv1=document.getElementById('div1');
var oDiv2=document.getElementById('div2');
var timer=null;
oDiv2.onmouseover=oDiv1.onmouseover=function (){
clearTimeout(timer);
oDiv2.style.display='block';
};
oDiv2.onmouseout=oDiv1.onmouseout=function (){
clearTimeout(timer);
timer=setTimeout(function (){
oDiv2.style.display='none';
}, );
};
};
</script>
</head>
<body>
<div id="div1"></div>
<div id="div2"></div>
</body>
</html>