下拉间隔延时提示框
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style>
div {float:left; margin:10px;}
#div1 {width:50px; height:50px; background:red;}
#div2 {width:250px; height:180px; background:#CCC; display:none;}
</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 ()
{
timer=setTimeout(function (){
oDiv2.style.display='none';
}, 500);
};
};
</script>
</head>
<body>
<div id="div1"></div>
<div id="div2"></div>
</body>
</html>