Help! Something strange with iPhoto

There's something wrong with iPhoto. The toolbar's order is wrong! I mean it's the reverse.

The buttons which are used when editting (efects,exposure,strokes etc.) are on the right. But they are suppose to be on the left. It was normal when I first purchased but it has changed. I didn't do anything. I've checked Apple's website. The order is definitely wrong. It's not just the toolbar. You can see the other pictures on the left while you're looking at a picture. Now they're on the right side. It's hard to use it like that