Open popup by a form's submit button?

[eluser]obiron2[/eluser]
try setting the third parameter to call a JS function and the first thing the function will need to do is cancel the submit action then pass the data as an Ajax call to be returned to a lightbox type <DIV>.

Sorry it that is a bit vaugue, but a lot of it will depend on which ajax library you are using or whether you are going to hand roll your Ajax (which is by far the best way to learn)

Obiron