Ask user to update its web player when trying to launch my app

Hello, Is there a way to ask user to update its web player plugin when trying to launch my app? Here is what I want to do: I implemented an app and export it for web. I want that all users will play the game only when a specific version of web player plugin is installed (let's say the current newest version 4.5.3). If a user has an older version of the web player plugin, I want that the app won't be loaded and user will be prompted to update its plugin. Hope this is doable :) Many thanks, Regards, Slim