Javascript Calculations not triggering.

The problem is with the CalculateKWH in the js.
I can't figure out why it's not triggering and populating TotKWH.
Any help would be appreciated.  Thanks.
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 <%@ Page Language="VB" ContentType="text/html" ResponseEncoding="utf-8" %>
<%@ Import Namespace="System.Data.OleDb" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
</script>
<script type = "text/javascript" language = "javascript">
function ValidateText(i)
{
    if(i.value.length>0)
    {
    ...