Event 'layerX'
<html> <body> <script> function function1(myEvent) { document.getElementById("myX").innerHTML = myEvent.layerX; document.getElementById("myY").innerHTML = myEvent.layerY; } document.onmousemove = function1; </script> <p> <b>Layer X Coordinate:</b> <span id="myX">0</span> </p> <p> <b>Layer Y Coordinate:</b> <span id="myY">0</span> </p> <button onclick="alert(event.type);">Event Type</button> </body> </html>