Hi
No need to worry regarding that.
if u want to execute a ASP function on Submit, then obviously a page will be requested from the server.
I will tell u an alternative way to achieve this.
Just implement a general button on the form.
Onclick of this button u have to go to Remote Scripting where
the page remains as it is and the function that u want to execute is written in one more asp page that is called by the remote applet.
This button is going to call that add,delete,modify etc functions.
If u want to try remote script ( a bit Knowledge is needed )
then visit
http://msdn.microsoft.com and give keywords as
Synchronous Remote script or ASynchronous Remote script
You will get a neat Biography of Remoting.
Cheers
Mn Karthik