JavaScript for easy image social sharing

We need to build on page tool for easy image's haring on Facebook/Twitter/Tumblr. On page user should see only icon over the image or near it and after click on it there should be java popup with step by step process of sharing image. On the page thare should be one line code to include under the image Script will work on separate domain so that tool can be used on any site. Facebook sharing - popup with image + custom description + url to source of image Twitter sharing - standard popup + short link ([login to view URL]) + (via @source) Tumblr sharing - to standard posting window + custom text Please make your bid and please ask your questions about this project - the faster we clear things out the faster we get it done. Thank you very much!