Dialogue for URL* functions

Import["http://i.stack.imgur.com/XNwW3.png"]

Import["http://i.stack.imgur.com/XNwW3.png"]

Import["https://i.stack.imgur.com/XNwW3.png"]

SetOptions[URLFetch,"DisplayProxyDialog"->False];

URLRead["http://i.stack.imgur.com/XNwW3.png"]

DialoglessURLRead=URLFetch[#,"StatusCode",Method->"HEAD","DisplayProxyDialog"->False]/.(200:>URLRead[##])&

DialoglessURLRead["https://i.stack.imgur.com/XNwW3.png"]

DialoglessURLRead=URLFetch[#,"StatusCode",Method->"HEAD","DisplayProxyDialog"->False]/.(200:>URLRead[##])&

?URLDownload