Get number of attachments using JS

Hello,

I'm trying to use a preSaveAction to make attachments a mandatory field when submitting a new row onto a list in SharePoint.  (for whatever reason, employer doesn't allow rules in InfoPath).  So I have a javascript function that isn't work (that I didn't write) to lookup the attachment count and then do an If function to make sure it is larger than 0.  I'm a novice when it comes to JS, and would like some input... As it's not my script, I don't want to post the whole thing, so just let me know if either of these 2 things look blatantly wrong:

 // Get Attachment Count
 var AttachmentCount = $("#idAttachmentsTable");

and

// Ensure file is Attached
 if (AttachmentCount == null || AttachmentCount.rows == null || AttachmentCount.rows.length == 0)

Many thanks.

EDIT: To clarify, the presavefunction is constantly returning a false, even when there is an attachment.  This leads me to believe that the actual lookup must be wrong (constantly returning a 0), since it seems it every other part of this script is doing it's part.