già ce ci siamo dai un occhio a questo codice

<html>
<head>
<style>
img
{
position:relative;
}
</style>
<script type="text/javascript">
mouseover=true
function coordinates()
{
if (!moveMe)
{
return
}
if (event.srcElement.id=="moveMe")
{
mouseover=true
pleft=document.getElementById('moveMe').style.pixe lLeft
ptop=document.getElementById('moveMe').style.pixel Top
xcoor=event.clientX
ycoor=event.clientY
document.onmousemove=moveImage
}
}

function moveImage()
{
if (mouseover&&event.button==1)
{
document.getElementById('moveMe').style.pixelLeft= pleft+event.clientX-xcoor
document.getElementById('moveMe').style.pixelTop=p top+event.clientY-ycoor
return false
}
}

function mouseup()
{
mouseover=false
}
document.onmousedown=coordinates
document.onmouseup=mouseup
</script>
</head>
<body>
[img]smiley.gif[/img]

Drag and drop the image
</body>
</html>