;--------------------------------
; Open a URL in a browser.
; http://nsis.sourceforge.net/Open_link_in_new_browser_window
Function openLinkNewWindow
  Push $3
  Exch
  Push $2
  Exch
  Push $1
  Exch
  Push $0
  Exch

  ReadRegStr $0 HKCR "http\shell\open\command" ""
; Get browser path             
    DetailPrint $0
  StrCpy $2 '"'                 ;"
  StrCpy $1 $0 1
  StrCmp $1 $2 +2 ; if path is not enclosed in " look for space as final char 
    StrCpy $2 ' '
  StrCpy $3 1
  loop:
    StrCpy $1 $0 1 $3
    DetailPrint $1
    StrCmp $1 $2 found
    StrCmp $1 "" found
    IntOp $3 $3 + 1
    Goto loop

  found:
    StrCpy $1 $0 $3
    StrCmp $2 " " +2
      StrCpy $1 '$1"'           ;"

  Pop $0
  Exec '$1 $0'
  Pop $0
  Pop $1
  Pop $2
  Pop $3
FunctionEnd

!macro _OpenURL URL
Push "${URL}"
Call openLinkNewWindow
!macroend

!define OpenURL '!insertmacro "_OpenURL"'