<style type="text/css">
.MoveDivContent
{
position: absolute;

width: 600px;
height: 200px;
border: 2px #507CD1 solid;
background: #EFF3FB;
cursor:pointer;
}
.MoveDivTitle
{
width: 600px;
line-height: 25px;
text-align: left;
background: #507CD1;
color:#FFFFFF;
cursor: move;
}
</style>

<script language="javascript" type="text/javascript">
/*
调用方法:var myDrag=new Endrag(source,target,offSetX, offSetY);
参数说明:source--鼠标动作绑定对象;target--操作目标对象(要移动的对象);offSetX--横坐标偏移;offSetY--纵坐标偏移
说明:通过多次调用本方法绑定多个对象的拖动
*/
funs = {
index: 100,
getFocus: function(target) {
if (target.style.zIndex != this.index) {
this.index += 2;
var idx = this.index;
target.style.zIndex = idx;
}
},
abs: function(element) {
var result = { x: element.offsetLeft, y: element.offsetTop };
element = element.offsetParent;
while (element) {
result.x += element.offsetLeft;
result.y += element.offsetTop;
element = element.offsetParent;
}
return result;
}
};

function Endrag(source, target, offSetX, offSetY) {
source = typeof (source) == "object" ? source : document.getElementById(source);
target = typeof (target) == "object" ? target : document.getElementById(target);
var x0 = 0, y0 = 0, x1 = 0, y1 = 0, moveable = false, index = 100, NS = (navigator.appName == 'Netscape');
offSetX = typeof offSetX == "undefined" ? 0 : offSetX;
offSetY = typeof offSetY == "undefined" ? 0 : offSetY;
source.onmousedown = function(e) {
e = e ? e : (window.event ? window.event : null);
funs.getFocus(target);
if (e.button == (NS) ? 0 : 1) {
if (!NS) { this.setCapture() }
x0 = e.clientX;
y0 = e.clientY;
x1 = parseInt(funs.abs(target).x);
y1 = parseInt(funs.abs(target).y);
moveable = true;
}
};
//拖动;
source.onmousemove = function(e) {
e = e ? e : (window.event ? window.event : null);
if (moveable) {
target.style.left = (x1 + e.clientX - x0 - offSetX) + "px";
target.style.top = (y1 + e.clientY - y0 - offSetY) + "px";
}
};
//停止拖动;
source.onmouseup = function(e) {
if (moveable) {
if (!NS) { this.releaseCapture(); }
moveable = false;
}
};
}
</script>

<div style="background-color:#666666; width:400px; height:300px; z-index:1000000; position:relative; overflow:hidden;">
<div id="MoveDiv">adasdza</div>
</div>
<script type="text/javascript">
moveTag();
function moveTag() {
var i = new Endrag('MoveDiv', 'MoveDiv', 0, 0);
}
</script>