Since the client user has no totally installed flash player in their computer, so that No need to detect if they have installed flash player. I try to create an alert and I found out that it’s impossible to put a link in the alert. Now I remove the flash installer in my computer, so that the flash in my webpage become a box. I want to happen when they open my webpage that contains a flash; an alert or message on the top was appearing saying that “You do not have flash installed in your computer. Follow this link to get the installer”. I try it using alert but the link is impossible to appear. I have no idea how I can do this.