Today I saw a question on fischer-bayern.de asking for such a script.
So I just searched for a free file hoster where I can put the script and now I put it here for you to download. Simply choose the Leopard or Tiger version. The only difference between the 2 is the icon.
Extract the zip file and put the APP wherever you like. For example into /Applications/Utilities. From there drag it into the Finder's toolbar to have it always available or use a something like Butler to ave it available with just a keystroke.