I have a form with fields that are composed from a ResultSet of a database fetch, and composing names for some hidden fields associated with the data set. I want to use a javascript to update the status (hidden field value) according to changes from an input field. How do I reference such a dynamically generated hidden field name? The error message complains that the field I passed in is null or not an object.

e.g.

			

			function updateStatus (  fieldtag, flag ) {
			

			//Get the form name in the current generated html page
			

			var rec_details_form = document.forms["MarcRecDetails"];
			

			rec_details_form.fieldtag.value = flag;
			

			

			//Test the modified value
			

			alert ( "Status of " + fieldtag + " : " +  rec_details_form.row.value );
			

			}
			

			

				

				One row of the form code: