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JavaScript Lab: mouse over event

<!DOCTYPE html>
<html>
<body>

<img onmouseover="bigImg(this)" onmouseout="normalImg(this)" border="0" src="smiley.gif" alt="Smiley" width="32" height="32">

<p> The JavaScript this keyword refers to the object it belongs to.
<p>The function bigImg() is triggered when the user moves the mouse pointer over the image.</p>
<p>The function normalImg() is triggered when the mouse pointer is moved out of the image.</p>

<script>
function bigImg(x) {
x.style.height = "64px";
x.style.width = "64px";
}

function normalImg(x) {
x.style.height = "32px";
x.style.width = "32px";
}
</script>

</body>
</html>

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