Is there such a thing as "Client Side" VBScript in web development?

I got into a a discussion with a co-worker today regarding client side scripts. JavaScript is the only client side scripting language I have used (and the only one i know of), but she seemed to think 开发者_Go百科that you could have VBScript on the client side as well. Is this true?

---

Yes, for Internet Explorer:

<script language="vbscript">
    MsgBox ("Your entry was valid.")
</script>

Link: http://www.asp101.com/tips/index.asp?id=35

You can also have client-side c#.