trouble with this javascript in a webpage

[Jeff]

hi

..NET 3.5

I have trouble with this script, I get an compile error:
"The type or namespace name 'function' could not be found (are you missing a
directive or assembly)"

( I'm trying to create an DropDown Calendar Control, based on this example:
http://www.developer.com:80/net/asp/article.php/3327181 )

<script type="type/javascript" runat="server">
function OnClick()
{
if (divCalendar.style.display == "none")
divCaledar.style.display = "";
else
divCalendar.style.display = "none";
}
</script>

any suggestions?