create Wordpress plugin

Hello, I want a "page peel" plugin such as can be viewed on [login to view URL] in the topright corner (see attached pagepeel plugin) The plugin that you will create does not necessarily have to use flash such as the one attached. In fact its better if it uses jquery or javascript there will be two options: #1 - the pagepeel "sneak peak" is always visibile, and when mouse-hoverover it "unrolls" to show the larger image (just like on [login to view URL]) #2 - Exit mode. The "sneak peak" will NOT be visible to the visitor when they first visit the site. ONLY when someone actually clicks "back" in their browser or when they attempt to close the browser window/tab will the pagepeel appear. I dont want a warning box popup, I just want the page peel effect to appear and unroll to the large image when someone tries to close tab) (**note** I do NOT want the plugin you create to load the pagepeel effect when visitors just mouse hover near to the back-button, nor on "unfocus", they must actually CLICK the back button or CLICK to close tab for the Option#2 exitpeel to be triggered) when using the Option#2 (exit peel), the site visitor should be able to either click on the image and be redirected to target URL, or click a link/exit button which allows them to leave the site (back button or close tab) as they originally intended when the exitpop was triggered So to recap. I want the page peel effect to work as normal on option #1, but I also want the site-owner with plugin installed to be able to choose the option #2 for the page peel to begin as invisible (or transparent image) and THEN appear and unfold all the way ONLY when the website visitor tries to leave the page This plugin must be compatible with all major browsers: IE7+ Firefox Chrome Opera These corner peels, or exit pop peels must be configurable on a Post by Post basis (Page by Page also). They should also be able to be configured to appear on certain post categories. the settings page for this plugin must also have a simple graphical user interface. Plugin user must be able to choose either Option #1 or #2 for a particular peel design, must be able to upload/choose the images for the peel, and also set target link for when site visitor clicks on the peel image thanks for your bid!