替代嵌套在另一种形式的Ajax上载表单

I have an HTML form to edit the details of a person in a database system I have at my place of work. Part of the form allows the user to upload a picture of the person. However, this is giving me trouble, because I'm trying to make the form more Ajax-y by letting the user upload the picture and see it successfully uploaded before they submit the person's details to be saved. The part that's giving me trouble is that it seems to necessitate a nested form (that is, the upload form inside the details form), like so:I have an HTML form to edit the details of a pe