AutoHotkey Community

#SingleInstance, force
#Persistent

URL = www.somesite.com      ; put your url address here
urlDataFile = %A_Temp%\urlTEMPfile.txt
SetTimer, CheckChange, 30000   ;check for change every 30 seconds
return

CheckChange:
  UrlDownLoadToFile, %URL%, %urlDataFile%
  FileRead, newURLdata, %urlDataFile%
  if (newURLdata != oldURLdata) {
    MsgBox, %URL% has changed. New data is:`n%newURLdata%
    oldURLdata := newURLdata
  }
  return

    MsgBox,4096,, %URL% has changed. New data is:`n%newURLdata%

#SingleInstance, force
#Persistent

URL = http://portableapps.com/forums/development/portable_app_development   ; put your url address here
;URL = http://www.autohotkey.com/forum/forum-1.html   ; put your url address here
;URL = http://www.autohotkey.com/docs/Variables.htm   ; put your url address here
urlDataFile = %A_Temp%\urlTEMPfile.txt
OnExit, CleanUP                        ; delete temp file on script exit
UrlDownLoadToFile, %URL%, %urlDataFile%      ; get a copy of url data to compare against
FileRead, oldURLdata, %urlDataFile%
SetTimer, CheckChange, 30000   ;check for change every 30 seconds
return

CheckChange:
  UrlDownLoadToFile, %URL%, %urlDataFile%
  FileRead, newURLdata, %urlDataFile%
  if (newURLdata != oldURLdata) {
    MsgBox, %URL% has changed.
;   MsgBox New data is:`n%newURLdata%      ; uncomment this line if you want to see the new data in a message box
    oldURLdata := newURLdata
  }
  return

CleanUp:
  FileDelete, %urlDataFile%
  exitapp