[JavaScript]鼠标拖动

代码很简单：
	<div id="divMove" style="POSITION: absolute;left:300;top:300" onselectstart="return false" onmousedown="MouseDown(this)" onmousemove="MouseMove()">
		<table width="150" cellpadding="0" cellspacing="0" border="1">
			<tr>
				<td height="30" bgcolor="#cccccc">title</td>
			</tr>
			<tr>
				<td height="100"><p align="center">testMove</p></td>
			</tr>
		</table>
	</div>
	<SCRIPT LANGUAGE="JavaScript">
		<!--
			var currentMoveObj = null;
			var relLeft,relTop;
			function MouseDown(obj)
			{
				currentMoveObj = obj;
				currentMoveObj.style.position = "absolute";
				relLeft = event.x - currentMoveObj.style.pixelLeft;
				relTop = event.y - currentMoveObj.style.pixelTop;
			}
			window.document.onmouseup = function()
			{
				currentMoveObj = null;
			}
			function MouseMove()
			{
				if(currentMoveObj != null)
				{
					currentMoveObj.style.pixelLeft=event.x-relLeft;
					currentMoveObj.style.pixelTop=event.y-relTop;
				}
			}

		//-->
		</SCRIPT>