CSS Sprite creation and CSS Menu rewrite of code

We are looking for our existing CSS navigation menu to be recreated and re-coded using just one CSS Sprite for all the images within the menu - Approximately 80 images. Currently the menu works perfectly; however, after you have created the CSS sprite it will need re-coding to work correctly. After you have created the sprite and re-coded the menu, it must work perfectly in all current browsers including Firefox, Chrome, Safari and Explorer version 7, 8 and 9 We are also looking for an additional 3x menus to be created using the same/similar code, the 3x new menus will have slightly different images and different drop down links, the exact images and links for these menus will be provided to you. As stated the code has already been written, you do not have to write the code, just modify it to work with the new Sprite you create, the existing code will be supplied to you to work on and all the images to create the sprite. So, to clarify, you will create a total of 4x sprites and 4 Navigation Menus from the supplied CSS and images. The existing CSS can be seen in the attached files and screenshots of each of the 4x menus you will create. NOTES We pay on results, we will NOT pay you ANY money up front, you will receive 100% payment on completion of the project once you have submitted the files to us for testing. You have 1 week to complete the project from us accepting your bid, if you do not complete within 1 week we will find another developer and you will not be paid. Do NOT just place comments in your bid like: “Let’s start” or “I am ready” as we will not select you and have no interest in contacting you for more details, if you cannot be bothered to tell us what similar experience you have in projects like this then we cannot be bothered to select you. If you are not happy with the above notes, then please do not bid, we are trusted and reliable if you are selected and you produce what we are looking for you will be paid 100%