鼠标拖动，放开时坐标问题...
var div_img = document.getElementById("img");

div_img.onmousedown = startdarg;
div_img.onmouseup = stopdarg;

function startdarg(event)
{
if (!event)
{
event = window.event;
x=event.offsetX;
y =event.offsetY;
alert(x + " " + y);

}

}

function stopdarg(event)
{
if (!event)
{
//alert("haha");
event = window.event;
var a = event.offsetX;
var b = event.offsetY;

alert(a + " " + b);

}

}

这样子的话，鼠标左键按下去，是可以得到正确的值，但是一直按着鼠标进行拖动，放开鼠标时，根本就不会执行stopdrag，要怎么才能得到鼠标放开时的坐标呢？？


------解决方案--------------------
没有执行是因为你根本没有触发stopdrag,因为你startdrag的时候alert了一下,这个时候已经blur了,松开鼠标触发不到事件了
JScript code<script>var div_img = document.getElementById("img"); div_img.onmousedown = startdarg; div_img.onmouseup = stopdarg; function startdarg(event) { if (!event) { event = window.event; x=event.offsetX; y =event.offsetY; //alert(x + " " + y); self.status=x+":"+y; } } function stopdarg(event) { if (!event) { //alert("haha"); event = window.event; var a = event.offsetX; var b = event.offsetY; //alert(a + " " + b); self.status=a+":"+b; } }</script>