How to go to tab-number 1 when tab-end instead of going to next post?

I have a form in MS Access 2007. To change from one inputfield to another the user can use tab or enter. The problem is when the user 开发者_开发问答is in the last field and hit tab or enter she will jump to the next post. But I want to change this so the user jumps to the first filed in the same post or stays in the last field of the same post.

Maybe there is a very simple way to do this or do I have to write some vba?

I think the easiest way is to set the Cycle property to Current Record (Other tab on form properties), the default is All Records.