Live.com Firefox Plugin 3

I need a plugin that implements following on [login to view URL] (or [login to view URL]), which is an emailing service just like Gmail. Step 5: ($60) -Implement a demo of accessing the names of attached files right before sending (or on mouse-down-event of "Send"). -Implement a demo of cancelling the "Send" event only if the name of any of the attached files is "[login to view URL]". And as soon as the attached file "[login to view URL]" is removed, the email should be sent on clicking "Send" button. The total project is worth $875. Whoever is able to implement this step will be hired to implement the remaining steps too (apart from those that I are already done). The attached file describes the remaining steps. Whoever bids $60 or less for this particular step will be hired immediately. This project is for a trusted client. No milestones or payments created until the project is complete, and tested by the client, and until the client is happy.