common/src/web/dragAndDropInsideScrolledDiv.html

<html>
<head>
<style>
<!--
.dragme{position:relative;}
-->
</style>
<script language="JavaScript1.2">
<!--

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 style="overflow: scroll; margin: 20px; height: 90%; width: 90%">
    <div style="height: 4000px; width: 4000px;">
      <div id="test1" class="dragme" style="width: 100px; height: 100px;
                              background-color: black;" />
    </div>
  </div>
</body>
</html>