[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>