<DIV ID="counter">Number of clicks = 0</DIV>
<FORM>
<INPUT TYPE="button" VALUE="Increment Counter" onclick="updateMessage()">
</FORM>
<SCRIPT LANGUAGE="JavaScript">
<!--
var hits = 0;

function updateMessage() {
  hits += 1;
  document.getElementById("counter").innerHTML = "Number of clicks = " + hits;
}

// -->
</SCRIPT>

which looks like this on the Web:

Learn more about Netscape 6 in Column 72, Netscape 6, Part I: Detection and Scripting.

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