<!DOCTYPE html>
<html>
<head>
<style>
#myDIV {
border: 1px solid black;
}
</style>
</head>
<body>
<div id="myDIV">This example uses the HTML DOM to assign an "onwheel" event to a DIV element. Roll the mouse wheel over me - either up or down!</div>
<p>A function is triggered when you roll the mouse wheel over div. The function sets the font-size of div to 35 pixels.</p>
<p><strong>Note:</strong> The onwheel event is not supported in Internet Explorer or Safari.</p>
<script>
document.getElementById("myDIV").onwheel = function() {myFunction()};
function myFunction() {
document.getElementById("myDIV").style.fontSize = "35px";
}
</script>
</body>
</html>