Callback with no table header

pmaonline

Hi all, my site has a formbuilder that users can build thair own form, and i'm saving it in json...

So i don't know how many columns i have... i need to build the html header with the json result...

My json looks like this: {"address":"xxxxxxxx","city":"xxxxxxxxxxxx","state":"xxxxxx","email":"xxx@xxx.com"}

How can i do this???

thanks..