<!DOCTYPE html>
<html>
<head>
<script>
function whichElement(e) {
var targ;
if (!e) {
var e = window.event;
}
if (e.target) {
targ=e.target;
} else if (e.srcElement) {
targ=e.srcElement;
}
var tname;
tname = targ.tagName;
alert("You clicked on a " + tname + " element.");
}
</script>
</head>
<body onmousedown="whichElement(event)">
<p>Click somewhere in the document. An alert box will alert the name of the element you clicked on.</p>
<h3>This is a heading</h3>
<img border="0" src="smiley.gif" alt="Smiley" width="32" height="32">
<p>This is a paragraph.</p>
</body>
</html>