[SOLVED] Hide Add Button

Hello all,I do not know if it can be done with out a lot of coding.I have my main table Trips. Then there are a good bit of detail tables under it. What I would like to know is can I set some kind of code to hide the ADD button on all the detail tables?
I can add this code:

if ($data["locked"] == "1"){
 	$pageObject->hideItem("add", $recordId);
 	$pageObject->hideItem("add");
 	$pageObject->hideItem("update_selected");
 	}

In the list page of each detail table, and it works great. But some detail tables do not have anything and I need to make it so they can not add if the lock is set to 1 on the master table (trips).
Thank you very much for any kind of help or pointing me in the right way of learning how this can be done..
James