uno i know about this and i edit it to no one can download the images...
test by your self go to any 4images script by useing the fire fox browser and test this press Ctrl + U in any images page the you will get the source of the page than any one view this page ( the source ) can get the link of the images!!! only in Fire Fox Browser
but it didnot work in the Explorer Browser...
now how can i protect my images from any one how using Fire Fox Browser