Interestingly, "http://depapepemania.com/image/link_small.gif" renders as XHTML despite being named as an image.

However, "http://depapepemania.com/images/link_small.gif" renders as an image in FireFox but not in Internet Explorer.

My next suggestion: Double check your code, and re-upload your images.
Also, I pulled the image off the link and noticed the color mode was "index" when I looked at it in Photoshop. I have attached the image in "RGB" color mode if you would like to give that a try instead.

OK, sorry I posted as Gale44. I must have registered a long time ago, and forgot. My avatar makes more sense now don't it.

I really think the problems are related to the Aliases in drupal. I played with your link for link_extend last night, and it was working great in firefox. Wouldn't show up in IE. Then I tried pulling up the image in the browser, and I got a page not found error. THEN, the link would no longer work, even in firefox.

I don't know much, but it really seems that somehow in your quest to rename your files you have changed the alias instead. It would also stand to reason that if you have performance caching turned on, those pages remain for a while. You might want to turn that feature off until you have solved your problem.

THANK YOU GUYS!!!!
I have solved my problem, it's because in my "hotlink protection" I only allowed my web and I didn't add site B in "URLs to allow access" text box in cpanel

Although I still have one problem left,
when I tried to refresh site B, my image which previously showed up turned into "alt" text for that image.
Any suggestion...