源代碼的出處在哪我也不知道，我是在德問網上看到的，
覺得還不錯，就拿過來與大家分享，也爲自己保留～～很簡單的一段代碼。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>代碼非常簡潔且兼容多瀏覽器的拖動層</title>
</head>
<body>
<div id="f" style="position: absolute; width: 500px;
height: 350px; background-color: #ccc; top: 150px;
left: 200px; z-index: 101; border: solid 1px blue;">
<div id="title" style="background-color: Blue; cursor: move;
height: 20px; color: #fff;font-size: 13px;
padding-top: 5px; padding-left: 10px;">
這裏是層標題
</div>
</div>
<script type="text/javascript">
var posX;
var posY;
fdiv = document.getElementById("f");
document.getElementById("title").οnmοusedοwn=function(e) {
if(!e) e = window.event;
posX = e.clientX - parseInt(fdiv.style.left);
posY = e.clientY - parseInt(fdiv.style.top);
document.onmousemove = mousemove;
}
document.onmouseup = function() {
document.onmousemove = null;
}
function mousemove(ev) {
if(ev==null) ev = window.event;
fdiv.style.left = (ev.clientX - posX) + "px";
fdiv.style.top = ev.clientY - posY + "px";
}
</script>
</body>
</html>
