Ability to use other attribute than href for image urls (for hiding them in the statusbar)

It would be awesome if I could keep using href # or href javascript:void(0) (to hide the image url on hover).
`<a href="#" data-prettyphoto-href="http://realimageurl.org/image.png">`

and that I could specify 'data-prettyphoto-href' as option for prettyphoto to get the full image link from.