if you r a mozilla firefox user

just follow these steps

Open the Pic you want to save ...

then goto -- > Tools --> Page Info --> media --> then down below you can see all the

pics on that page ... and just see thers the pic you want woilaa ...then abv thers a

option to save as ....
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Another way is that ...... jus open that pic which you want to save

and then just drag in into a new ...tab and then save as ..

and you are done

No need to run any java script