In the previous versions of Internet Explorer, when there was a JPEG on a web page that I wanted to click to either enlarge its view or to see the exact address of the image, I would be able to do it by clicking or option-clicking the JPEG. Most recently, in version 5.2 , I've noticed that I couldn't do it anymore. I tried everything from option-clicking to anything else I thought possible.
Well, I found out the problem: Explorer 5.2 has set JPEG picture viewing to work through Preview so that every time a user attempts to view a JPEG in the browser, instead it downloads the image then opens it with Preview. I found this to be very annoying.
So, I went into preferences , clicked on Receiving Files - File Helpers, then I scrolled down to the four JPEG Picture options. I clicked change on each one and then clicked Browse. I then selected the Internet Explorer 5.2 Application (which I had in my applications folder) and Abracadabra! My images opened up from then on in Internet Explorer and I could once again see the link to a picture by option-clicking it. Just in case, I also changed Handling to View w/ Browser as well as Destination Folder to Temporary Items Folder to insure that I woudn't have the image downloaded onto my computer.
I hope this will help anyone else out there that might be frustrated by this slight change.
[Editor's note: Although my copy of IE does have the JPEG settings set to "Preview," I wasn't able to make IE open Preview for any image, despite trying a variety of keyboard combos when I clicked the image. Still, this may be helpful to someone if your IE seems to be misbehaving with JPEG images...]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20020821092000607