Value of $_POST['submit']

[email protected] (Ron Piggott)
Newsgroups php.db
Organization Acts Ministries Christian Evangelism
Message-ID <[email protected]> 
I am working on the following web page tonight:
http://www.actsministrieschristianevangelism.org/verseoftheday/

I am trying to program the "Load Previous Issue" "Random Issue" and
"Load Next Issue" buttons.

I am using Ajax to pass the date the user is requesting to the PHP
script for processing.  

I am wondering how my PHP script may access the value of value of
$_POST['submit'].  At present echo $_POST['submit']; doesn't give me a
value.  Consequently all queries to the mySQL database fail.

Ron
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