I have a problem with photoshop. I made a something on transparent background and that thing drops shadow on background. It looks ok in edit view, but when I want to save it for web in .gif shadow turns into black line. Can anyone help me?

I recommend you to save the image in PNG

if you need GIF then you need to edit the matte color
First create the image, then press CTRL+SHIFT+ALT+N ( Save for web )
then on the right side you can see the matte settings. please choose the most apropiate color you need ( it should be the same like your background )

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Only problem with PNG is that IE6 doesn't support it without extra javascript code attached to page.

Same problem here guys