Build up a stock widget for seo

we would like to make a clone of the following widget: [login to view URL] this widget loads financial info from: **[[login to view URL]][1] so we need the same widget but displaying by default the cac 40 (french stock) and a search box to search for another value. this widget must be customized with our logo and have a manual installation javascript for webmasters to put our widget on their site. (like here: **[login to view URL]) ** This widget aims at developping our SEO strategy so that each time someone paste our widget javascript we have backlinks to our website. thanks for bidding **