Develop webpage to detect if a chrome/FF extension is installed combination of webpage + extensions -repost

I require a website/extensions to be designed that can do all of the following: 1) A GUI for Administrators to specify extensions / versions to check for 2) Once website is open in browser, check if a extension/version is installed within chrome / Firefox 3) If yes, determine if its the move recent version 4) If not, prompt the user to easily install the plugin After successful install / plugin detected to redirect to an additional URL. Webpage must be easily edited by staff with Dreamweaver.