Element submit is undefined in the form

Hello,this is Mr -Bat n  i am getting this error when i display forms every operations work n the error disappears after subit button is pressed then it goes  why it happens.ca anyone help me please. inthe code i have written this:

<cfif IsDefined(form.submit)>

<cfquery name="New" datasource="CFM">

Insert into dbo.City_Master(City_Id,City_Description,State_description)

Values(#CityCode#,'#Cityname#','#State#')

</cfquery>

<cfquery name="Update" datasource="CFM">

Update dbo.City_Master set City_Description='#Cityname#' where State_description='#State#'

</cfquery>

<cfquery name="Search" datasource="CFM">

Select * from dbo.City_Master

</cfquery>

</cfif>