我现在写了个拖动，但是如果在DIV中加上一个一样大小的图片，图片就无法正常拖动了。没有图片的话可以正常使用
所谓的图片无法正常拖动显示为只能拖动很小一段距离，然后鼠标手势就变成了一个禁止图形，图片不再跟着鼠标移动，这时放开鼠标后图片又跟踪鼠标移动了，但是我需要的是放开鼠标后图片和其父DIV应当不再移动
所谓的图片无法正常拖动显示为只能拖动很小一段距离，然后鼠标手势就变成了一个禁止图形，图片不再跟着鼠标移动，这时放开鼠标后图片又跟踪鼠标移动了，但是我需要的是放开鼠标后图片和其父DIV应当不再移动
function drag(o, s) { if (typeof o == "string") o = document.getElementById(o);
o.orig_x = parseInt(o.style.left) - document.body.scrollLeft;
o.orig_y = parseInt(o.style.top) - document.body.scrollTop;
o.orig_index = o.style.zIndex; o.onmousedown = function(a) {
this.style.cursor = "pointer";
//this.style.zIndex = 10000; var d = document;
if (!a) a = window.event;
var x = a.clientX + d.body.scrollLeft - o.offsetLeft;
var y = a.clientY + d.body.scrollTop - o.offsetTop; d.ondragstart = "return false;"
d.onselectstart = "return false;"
d.onselect = "document.selection.empty();" if (o.setCapture)
o.setCapture();
else if (window.captureEvents)
window.captureEvents(Event.MOUSEMOVE | Event.MOUSEUP); d.onmousemove = function(a) {
if (!a) a = window.event;
var xx = parseInt(a.clientY + document.body.scrollTop - y) - document.body.scrollTop;
var yy = parseInt(a.clientX + document.body.scrollLeft - x) - document.body.scrollLeft; /****定义移动范围哦******/ // var topmin = document.getElementById("maxheightpic").offsetTop;
// var topmax = document.getElementById("maxheightpic").scrollHeight + document.getElementById("maxheightpic").offsetTop - 30;
// var leftmin = document.getElementById("maxheightpic").offsetLeft;
// var leftmax = document.getElementById("maxheightpic").offsetLeft + document.getElementById("maxheightpic").offsetWidth - document.getElementById(o.id).offsetWidth; o.style.left = a.clientX + document.body.scrollLeft - x + "px";
o.style.top = a.clientY + document.body.scrollTop - y + "px";
o.orig_x = parseInt(o.style.left) - document.body.scrollLeft;
o.orig_y = parseInt(o.style.top) - document.body.scrollTop;
}
d.onmouseup = function() { if (o.releaseCapture)
o.releaseCapture();
else if (window.captureEvents)
window.captureEvents(Event.MOUSEMOVE | Event.MOUSEUP);
d.onmousemove = null;
d.onmouseup = null;
d.ondragstart = null;
d.onselectstart = null;
d.onselect = null;
o.style.cursor = "normal";
o.style.zIndex = o.orig_index;
document.onmousemove = onmousedown;
} if (s) {
var orig_scroll = window.onscroll ? window.onscroll : function() { };
window.onscroll = function() {
orig_scroll();
o.style.left = o.orig_x + document.body.scrollLeft;
o.style.top = o.orig_y + document.body.scrollTop;
}
}
}
}