Autopopulate Date In Table

Hello,

I am attempting to create a form with a table that has the date autopopulated for each row.  When I click a button using the instance manager, it will add a row, and another button will remove the most bottom row.  I am stuck now that when I add a row, it only has the date autopopulated on the top row, and not the one I just added.  I am using this Javascript to acheive the date:

if(this.rawValue == null)

{

    this.rawValue = util.printd("mmmm dd, yyyy", new Date());

}else{}  

I am wondering if anyone can shed light on why this might not be working or if this is even possible. I appreciate the help in advance. Thank you.

Justin