[PHP] Validating Dynamic Checkboxes

[Albert Padley]

I have a php/mysql script that returns a series of records to populate 
a form. The number of records returned varies from 1 to as many as 100. 
On the display page, each record has a checkbox to indicate that the 
record is being edited. This is checked on the results page to know 
which records to update. The checkbox code is:

<input type=\"checkbox\" name=\"ed[{$row['id']}]\" value=\"Y\">
This part of the system has been working perfectly for weeks.
Now I've been asked to add client side validation to make sure at least 
one of the records (checkboxes) has been checked before sending the 
data to the results page. (The results page already has working 
validation code in it.)

I've have the following javascript code that should work for my 
purposes if I can figure out how to dynamically build the javascript 
code.

<SCRIPT>
 function validate() {
 if (!(mainform.ed[0].checked || mainform.ed[1].checked)) {
 alert('Please check at least one record before submitting this form.');
 event.returnValue=false;
 }
 }
 </SCRIPT>
This is the line I need to build dynamically:
 if (!(mainform.ed[0].checked || mainform.ed[1].checked)) {
Any help, pointers, suggestions, etc. will be greatly appreciated.
Thanks.
Albert Padley
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