<script type="text/javascript">
var oDiv = document.getElementById('info1');
oDiv.onmousedown = function (env) {
var env = env||window.event;
var disX = env.offsetX;
var disY = env.offsetY;
document.onmousemove = function(env){
var env = env||window.event;
oDiv.style.left = env.clientX - disX+'px';
oDiv.style.top = env.clientY -disY+'px';
}
document.onmouseup =function(){
document.onmousemove = null;
}
}
</script>
<style>
#info1{
width: 200px;
height: 200px;
background: #c599af;
position: absolute;
cursor: move;
}
</style>
<body>
<div id="info1"></div>
</body>
