Is it possible for a remote html file to download a file to a client?

[ruddz]

I'm an iOS dev looking into some security aspects of a native iPhone app that loads local html pages into a UIWebView (that's the iOS class that give browsers functionality to a native app).If the app loads a local html file and that file contains a link to an external html file then is it possible for that external file to download a file to the client (another html file or a javascript file)? My knowledge of html/javascript isn't detailed enough in this area.Thanks