Get the filename of the first attachment in a list item

I have a custom view form for my list. The form needs to display the contents of the list item as well as the photo that is attached to the list item. Currently I am having the end user copy and paste the filename into a separate column and using that to complete the src for the <img> tag.

I have used the following code to display the image on the .aspx form:

<img border="0" src="/Lists/Barring Records/Attachments/{@ID}/{@photo}" style="max-width: 1000px; max-height: 600px;"/>

where @ID is the list item ID and @photo is the copy-and-paste filename. This works but is awful for the end user.

Is there a way to find and reference the first attachment for the list item and insert it where the {@photo} goes? I do not care about any other attachments but the first. I would prefer to do this on the form page, but can put the code elsewhere if instructed.

I have SharePoint Foundations 2010