Question about image on Ex-Associate 2 Website Themes

I was wondering how the image up on the title bar is faded out on one side. I replaced the original pic with one of my own and the effect is on that one also. Where do I go to change the way the fade is working. I've spent quite a bit of time taking the template apart to try to understand it, but with no luck so far.

Thanks in advance !

Once you select the pic, select the transparency tool and you will fine it has a linear transparency.

Take care, Mike

Thanks ... it was staring me right in the face the whole time. I kept looking at the photo tools and opacity wasn't an option but I knew there had to be a way.