Yes, I think Javascript is the best bet for what you what to do. Here's a good resource: http://developer.irt.org/script/157.htm and http://developer.irt.org/script/form.htm#5 and http://developer.irt.org/script/form.htm and finally http://developer.irt.org/script/script.htm >good morning claude >thanks for your help!!! > >but.....this validation is inmplemented in my solution, and work fine. >The case is...in the sample in your webpage, the current action is Editing.. > >but when the record is new...i need trap to >Summit, Confirm >Back Explorer click >Back Explorer click >Summit, Confirm >Back Explorer click >Back Explorer click >Summit, Confirm >. >. >. >to avoid "duplicate recs"...now i am finding JavasScript code for this >case... > >Thanks Claude for your help.... > >att >William