转:鼠标拖动图片

<html>
<HEAD>
<title>鼠标拖动图片</title>
<style type="text/css">
<!--
.dragme{position:relative;}
-->
</style>
<script type="text/javascript">
var ie=document.all;
var nn6=document.getElementById && !document.all;
var isdrag=false;
var x,y;
var dobj;

function movemouse(e)
{
if (isdrag)
{
dobj.style.left = nn6 ? tx + e.clientX - x : tx + event.clientX - x;
dobj.style.top  = nn6 ? ty + e.clientY - y : ty + event.clientY - y;
 return false;
}
}

function selectmouse(e)
{
var fobj       = nn6 ? e.target : event.srcElement;
  var topelement = nn6 ? "HTML" : "BODY";
  while (fobj.tagName != topelement  &&  fobj.className != "dragme")
  {
    fobj = nn6 ? fobj.parentNode : fobj.parentElement;
  }
  if (fobj.className=="dragme")
  {
    isdrag = true;
    dobj = fobj;
    tx = parseInt(dobj.style.left+0);
    ty = parseInt(dobj.style.top+0);
    x = nn6 ? e.clientX : event.clientX;
    y = nn6 ? e.clientY : event.clientY;
    document.onmousemove=movemouse;
    return false;
  }

}
document.onmousedown=selectmouse;
document.onmouseup=new Function("isdrag=false");
</script>
</HEAD>
<BODY>
<div align="center"><img src="/jscss/demoimg/wall_s1.jpg" class="dragme"></div>
</body>
</html>
原文地址:https://www.cnblogs.com/wzq806341010/p/3124140.html