//获取元素的位置 function getLeft(obj) { if (obj == null) return null; var mendingObj = obj; var mendingLeft = mendingObj.offsetLeft; while (mendingObj != null && mendingObj.offsetParent != null && mendingObj.offsetParent.tagName != "BODY") { mendingLeft = mendingLeft + mendingObj.offsetParent.offsetLeft; mendingObj = mendingObj.offsetParent; } return mendingLeft; }; function getTop(obj) { if (obj == null) return null; var mendingObj = obj; var mendingTop = mendingObj.offsetTop; while (mendingObj != null && mendingObj.offsetParent != null && mendingObj.offsetParent.tagName != "BODY") { mendingTop = mendingTop + mendingObj.offsetParent.offsetTop; mendingObj = mendingObj.offsetParent; } return mendingTop; }; //获取鼠标的位置 function getMousePosition(event) { var position = { MouseX: 0, MouseY: 0 } if (event.pageX != undefined) { position.MouseX = event.pageX; position.MouseY = event.pageY; } else { var target = EventUtil.getTarget(event); position.MouseX = event.offsetX + getLeft(target); position.MouseY = event.offsetY + getTop(target); } return position;