Hello Web2py_Superfan, .. i wanted to contact you directly .. but ... I am 
just replying to you on here and hopefully ... you will be able to follow 
up with any pointers !

I have a similar situation ... pertaining to previewing the image before 
committing to the db.table. upload field !! when a user is filling out a 
form  and have the option to upload his picture ! ....

I am having serious difficulty adapting various scripts  to web2py ... I 
want the user to be able to preview the image before submitting ......

did you have any success with your endeavour ??? .... did you end up 
adapting the  Ajax Upload from Zurb playgound to web2py ... ? .. I have 
tried it myself ... with no luck ! ...

This is obviously a javascript question  ... did you succeed ? .. if yes 
... can you share ? .. thank you in advance !!  

I have also checkout this script ffrom this link : 
http://blueimp.github.com/jQuery-File-Upload/

for the preview image capability upon filling out a form before submitting 
... ( this one with jquery is a very full featured one .. too big .. I 
happen not to need a whole bunch of stuff from it ... by isolating what I 
needed the upload, resize  & preview image .... but ..

I could not make it work either ....

I am still scratching my head with this .. I am looking for a simple 
solution to previewing an image after I resize it to fit ! ... 
I want it to work with all browsers if possible .. offcourse !
the whole thing works .. but I still cannot let the user preview his pic on 
the form before submit !! .. they get to see it only after !! . .and that 
bothers me !!

please advise

Don

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