Nowadays orkut has blocked the right click in a person's album, in order to prevent others from saving the photos. But I believe the statement, "Nothing is impossible" :)
There are many ways to save those photos. But the easiest of all is drag the photo to a new tab. Then right click on it to save the photo to your hard disk. I don't know whether orkut blocked the right click feature as a measure for privacy in the profile. I don't think so. Do you?
PS:
Other ways to do it is to take a screenshot and crop the image u need. Or u can copy the whole web page or copy the photo using Ctrl+c and paste it in word and save it from there.
