Marktplaats poster add on for firefox - open to bidding

Hello Ewebzeal, I'm looking for someone who can help me with my project. Another freelancer helped me create a program for a Dutch website called Marktplaats. Now I want some changes, but I couldn't reach an agreement with the other party about this. Could you please take a look at the video ( I created it for the other freelancer, but if you look at it you will get a feel for what I need done) and let me know if you will be able to help me out? I will send further details about the program when you agree to help me. Kind regards, Kevin van der Weide