<html><head> <title>Drag and Drop Example</title> <script type="text/javascript" src="/upload/files/201702/EventUtil.js"></script></head><body> <div id="myDiv" style="background:red;width:100px;height:100px;position:absolute"></div> <script type="text/javascript"> EventUtil.addHandler(document, "mousemove", function(event){ var myDiv = document.getElementById("myDiv"); myDiv.style.left = event.clientX + "px"; myDiv.style.top = event.clientY + "px"; }); </script></body></html>