^ You don't need to actually physically resize the pics, all you need to do is type in a little code into the tags. Click "modify" and see what I added to your code, that's all it takes.
Like this:
[img width=750]url here [/img]
This way the pictures can still be clicked to their original size. Just try clicking one of your pics now. Nothing is lost.
And since I've now told you how to do it, I expect you to do this in the future.