Photoshop :: JPEG Images Won't Show Up On Web Page

I am creating some .jpg buttons in photoshop. At first, I could create a button and then do an <img src="location"> and the image would show up. But for some reason, now when I create a button and save it as a jpeg, and then do the <img src="location"> the image won't display. And I am positive it is looking in the right place for the image.

What I have to do is save the button as a .jpg and then copy that .jpg image and paste it over an old .jpg button that I have previously made that would show up. I would save it as the new button name then. After doing that then I can see the new button created.

I don't know if it is the way I am creating or saving the .jpg's that is doing this, or if I accidentially changed a setting in Photoshop.