有关用jq制作的下拉菜单为什么，鼠标一放上去下拉菜单就下来一会，然后又自动收回去了？这是什么原因？
<html><head><title>伸缩的菜单，用jQuery重写</title><style><!--body{background-color:#ffdee0;}#...
<html>
<head>
<title>伸缩的菜单，用jQuery重写</title>
<style>
<!--
body{
background-color:#ffdee0;
}
#navigation {
width:200px;
font-family:Arial;
}
#navigation > ul {
list-style-type:none;/* 不显示项目符号 */
margin:0px;
padding:0px;
}
#navigation > ul > li {
border-bottom:1px solid #ED9F9F;/* 添加下划线 */
}
#navigation > ul > li > a{
display:block;/* 区块显示 */
padding:5px 5px 5px 0.5em;
text-decoration:none;
border-left:12px solid #711515;/* 左边的粗红边 */
border-right:1px solid #711515;/* 右侧阴影 */
}
#navigation > ul > li > a:link, #navigation > ul > li > a:visited{
background-color:#c11136;
color:#FFFFFF;
}
#navigation > ul > li > a:hover{
background-color:#990020;
color:#ffff00;
#navigation ul li ul{
list-style-type:none;
margin:0px;
padding:0px 0px 0px 0px;
}
#navigation ul li ul li{
border-top:1px solid #ED9F9F;
}
#navigation ul li ul li a{
display:block;
padding:3px 3px 3px 0.5em;
text-decoration:none;
border-left:28px solid #a71f1f;
border-right:1px solid #711515;
}
#navigation ul li ul li a:link, #navigation ul li ul li a:visited{
background-color:#e85070;
color:#FFFFFF;
}
#navigation ul li ul li a:hover{
background-color:#c2425d;
color:#ffff00;
}
#navigation ul li ul.myHide{/* 隐藏子菜单 */
display:none;
}
</script>
</head>
<body>
<div id="navigation">
<ul id="listUL">
<li><a href="#">Home</a></li>
<li><a href="#">News</a>
<ul class="myHide">
<li><a href="#">Lastest News</a></li>
<li><a href="#">All News</a></li>
</ul>
</li>
<li><a href="#">Sports</a>
<ul class="myHide">
<li><a href="#">Basketball</a></li>
<li><a href="#">Football</a></li>
<li><a href="#">Volleyball</a></li>
</ul>
</li>
<li><a href="#">Weather</a>
<ul class="myHide">
<li><a href="#">Today's Weather</a></li>
<li><a href="#">Forecast</a></li>
</ul>
</li>
<li><a href="#">Contact Me</a></li>
</ul>
</div>
</body>
</html> 展开
<head>
<title>伸缩的菜单，用jQuery重写</title>
<style>
<!--
body{
background-color:#ffdee0;
}
#navigation {
width:200px;
font-family:Arial;
}
#navigation > ul {
list-style-type:none;/* 不显示项目符号 */
margin:0px;
padding:0px;
}
#navigation > ul > li {
border-bottom:1px solid #ED9F9F;/* 添加下划线 */
}
#navigation > ul > li > a{
display:block;/* 区块显示 */
padding:5px 5px 5px 0.5em;
text-decoration:none;
border-left:12px solid #711515;/* 左边的粗红边 */
border-right:1px solid #711515;/* 右侧阴影 */
}
#navigation > ul > li > a:link, #navigation > ul > li > a:visited{
background-color:#c11136;
color:#FFFFFF;
}
#navigation > ul > li > a:hover{
background-color:#990020;
color:#ffff00;
#navigation ul li ul{
list-style-type:none;
margin:0px;
padding:0px 0px 0px 0px;
}
#navigation ul li ul li{
border-top:1px solid #ED9F9F;
}
#navigation ul li ul li a{
display:block;
padding:3px 3px 3px 0.5em;
text-decoration:none;
border-left:28px solid #a71f1f;
border-right:1px solid #711515;
}
#navigation ul li ul li a:link, #navigation ul li ul li a:visited{
background-color:#e85070;
color:#FFFFFF;
}
#navigation ul li ul li a:hover{
background-color:#c2425d;
color:#ffff00;
}
#navigation ul li ul.myHide{/* 隐藏子菜单 */
display:none;
}
</script>
</head>
<body>
<div id="navigation">
<ul id="listUL">
<li><a href="#">Home</a></li>
<li><a href="#">News</a>
<ul class="myHide">
<li><a href="#">Lastest News</a></li>
<li><a href="#">All News</a></li>
</ul>
</li>
<li><a href="#">Sports</a>
<ul class="myHide">
<li><a href="#">Basketball</a></li>
<li><a href="#">Football</a></li>
<li><a href="#">Volleyball</a></li>
</ul>
</li>
<li><a href="#">Weather</a>
<ul class="myHide">
<li><a href="#">Today's Weather</a></li>
<li><a href="#">Forecast</a></li>
</ul>
</li>
<li><a href="#">Contact Me</a></li>
</ul>
</div>
</body>
</html> 展开
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哪里有JQ ？ 这是纯css做的吧
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