I have this..

 <ig:WebDatePicker ID="WebDatePicker1" runat="server" DisplayModeFormat="g"
                    EditModeFormat="g" StyleSetName="Default" StyleSetPath="ig_res">
                    <ClientSideEvents CalendarClosed="CalClose1" />
                </ig:WebDatePicker>

so when the calendarClosed event is hit I want it to run this function.

function CalClose1()
   if icount1 =0 then
    icount1=1
       webdatepicker1.value = webdatepicker1.value & " 12:00:00 AM"
    end if   
   end function

I get an error from your javascript saying CalClose1 must be a function..

someone wanna tell me what I have done wrong?

entire script below

<script type="text/script" language="vbscript">
   dim icount1
   dim icount2
  
   function CalClose1()
   if icount1 =0 then
    icount1=1
       webdatepicker1.value = webdatepicker1.value & " 12:00:00 AM"
    end if   
   end function
  
   function CalClose2()
   if icount2 =0 then
    icount2=1
       webdatepicker2.value = webdatepicker2.value & " 11:59:59 PM"
    end if   
   end function
   </script>