Could you reproduce the HTML that did not work for you? Maybe you have a frequent typo in it. *Lunatic*, n. One whose delusions are out of fashion.
Cut and pasted your code...
Which browser are you using?
But this other weird thing popped up. If I first have the full size pic posted in the preview and then the 400 one, then both of'em shows, albeit with the error message: "Attribute < P for tag IMG is not allowed"
Further, it only works if the code for the "400" pic is posted above the code for the full size pic.
Peak oil is not an energy crisis. It is a liquid fuel crisis.
That's what I get for just copying the code from the New User Guide, where apparently the closing > is also lacking. Peak oil is not an energy crisis. It is a liquid fuel crisis.
BTW, I suggest you install the BBCodeXtra or some similar add-on to Firefox, that makes the use of HTML codes much easier. *Lunatic*, n. One whose delusions are out of fashion.